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Preview: Recent Articles in Phys. Rev. Lett.

Recent Articles in Phys. Rev. Lett.

Recent articles in Physical Review Letters

Published: 2018-03-23T23:03:22+00:00


Momentum-Space Josephson Effects


Author(s): Junpeng Hou, Xi-Wang Luo, Kuei Sun, Thomas Bersano, Vandna Gokhroo, Sean Mossman, Peter Engels, and Chuanwei Zhang

An analogy to the Josephson effect, but in momentum space, is proposed in a spin-orbit-coupled Bose-Einstein condensate.

[Phys. Rev. Lett. 120, 120401] Published Fri Mar 23, 2018

Quantum Dynamics of ${\mathrm{H}}_{2}$ Trapped within Organic Clathrate Cages


Author(s): Timothy A. Strobel, Anibal J. Ramirez-Cuesta, Luke L. Daemen, Venkata S. Bhadram, Timothy A. Jenkins, Craig M. Brown, and Yongqiang Cheng

The rotational and translational dynamics of molecular hydrogen trapped within $β$-hydroquinone clathrate (${\mathrm{H}}_{2}@β$-HQ)—a practical example of a quantum particle trapped within an anisotropic confining potential—were investigated using inelastic neutron scattering and Raman spectroscopy....

[Phys. Rev. Lett. 120, 120402] Published Fri Mar 23, 2018

Ising-like Models with Energy-Volume Coupling


Author(s): Claudio A. Cerdeiriña and H. Eugene Stanley

We consider a regular assembly of singly occupied cells with two accessible volumes. Coupled to cell volumes are interaction energies between nearest neighbors that lead to a phase transition with a critical point. We find that these compressible cell models can serve as Ising-like prototypes of the...

[Phys. Rev. Lett. 120, 120603] Published Fri Mar 23, 2018

Pulsar TeV Halos Explain the Diffuse TeV Excess Observed by Milagro


Author(s): Tim Linden and Benjamin J. Buckman

Milagro observations have found bright, diffuse TeV emission concentrated along the galactic plane of the Milky Way. The intensity and spectrum of this emission is difficult to explain with current models of hadronic $γ$-ray production, and has been named the “TeV excess.” We show that TeV emission ...

[Phys. Rev. Lett. 120, 121101] Published Fri Mar 23, 2018

Cosmological Signature of the Standard Model Higgs Vacuum Instability: Primordial Black Holes as Dark Matter


Author(s): J. R. Espinosa, D. Racco, and A. Riotto

A proposed instability in the Higgs field could have seeded the Universe with primordial black holes that now serve as dark matter.

[Phys. Rev. Lett. 120, 121301] Published Fri Mar 23, 2018

Elliptic Double-Box Integrals: Massless Scattering Amplitudes beyond Polylogarithms


Author(s): Jacob L. Bourjaily, Andrew J. McLeod, Marcus Spradlin, Matt von Hippel, and Matthias Wilhelm

We derive an analytic representation of the ten-particle, two-loop double-box integral as an elliptic integral over weight-three polylogarithms. To obtain this form, we first derive a fourfold, rational (Feynman-)parametric representation for the integral, expressed directly in terms of dual-conform...

[Phys. Rev. Lett. 120, 121603] Published Fri Mar 23, 2018

Measurement of the Ratio of Branching Fractions $\mathcal{B}({B}_{c}^{+}→J/ψ{τ}^{+}{ν}_{τ})/\mathcal{B}({B}_{c}^{+}→J/ψ{μ}^{+}{ν}_{μ})$


Author(s): R. Aaij et al. (LHCb Collaboration)

A measurement is reported of the ratio of branching fractions $\mathcal{R}(J/ψ)=\mathcal{B}({B}_{c}^{+}→J/ψ{τ}^{+}{ν}_{τ})/\phantom{\rule{0ex}{0ex}}\mathcal{B}({B}_{c}^{+}→J/ψ{μ}^{+}{ν}_{μ})$, where the ${τ}^{+}$ lepton is identified in the decay mode ${τ}^{+}→{μ}^{+}{ν}_{μ}{\overline{ν}}_{τ}$. This...

[Phys. Rev. Lett. 120, 121801] Published Fri Mar 23, 2018

Next-to-Next-to-Leading-Order QCD Corrections to the Transverse Momentum Distribution of Weak Gauge Bosons


Author(s): A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover, A. Huss, and D. M. Walker

The transverse momentum spectra of weak gauge bosons and their ratios probe the underlying dynamics and are crucial in testing our understanding of the standard model. They are an essential ingredient in precision measurements, such as the $W$ boson mass extraction. To fully exploit the potential of...

[Phys. Rev. Lett. 120, 122001] Published Fri Mar 23, 2018

Probing the Single-Particle Character of Rotational States in $^{19}\mathrm{F}$ Using a Short-Lived Isomeric Beam


Author(s): D. Santiago-Gonzalez, K. Auranen, M. L. Avila, A. D. Ayangeakaa, B. B. Back, S. Bottoni, M. P. Carpenter, J. Chen, C. M. Deibel, A. A. Hood, C. R. Hoffman, R. V. F. Janssens, C. L. Jiang, B. P. Kay, S. A. Kuvin, A. Lauer, J. P. Schiffer, J. Sethi, R. Talwar, I. Wiedenhöver, J. Winkelbauer, and S. Zhu

A beam containing a substantial component of both the ${J}^{π}={5}^{+}$, ${T}_{1/2}=162\text{ }\text{ }\mathrm{ns}$ isomeric state of $^{18}\mathrm{F}$ and its ${1}^{+}$, 109.77-min ground state is utilized to study members of the ground-state rotational band in $^{19}\mathrm{F}$ through the neutron...

[Phys. Rev. Lett. 120, 122503] Published Fri Mar 23, 2018

Polarizability of Helium, Neon, and Argon: New Perspectives for Gas Metrology


Author(s): Christof Gaiser and Bernd Fellmuth

With dielectric-constant gas thermometry, the molar polarizability of helium, neon, and argon has been determined with relative standard uncertainties of about 2 parts per million. A series of isotherms measured with the three noble gases and two different experimental setups led to this unprecedent...

[Phys. Rev. Lett. 120, 123203] Published Fri Mar 23, 2018

Periodically Driven Array of Single Rydberg Atoms


Author(s): Sagarika Basak, Yashwant Chougale, and Rejish Nath

An array of single Rydberg atoms driven by a temporally modulated atom-field detuning is studied. The periodic modulation effectively modifies the Rabi coupling, leading to unprecedented dynamics in the presence of Rydberg-Rydberg interactions, in particular, blockade enhancement, antiblockades, and...

[Phys. Rev. Lett. 120, 123204] Published Fri Mar 23, 2018

Driven-Dissipative Supersolid in a Ring Cavity


Author(s): Farokh Mivehvar, Stefan Ostermann, Francesco Piazza, and Helmut Ritsch

Supersolids are characterized by the counterintuitive coexistence of superfluid and crystalline order. Here we study a supersolid phase emerging in the steady state of a driven-dissipative system. We consider a transversely pumped Bose-Einstein condensate trapped along the axis of a ring cavity and ...

[Phys. Rev. Lett. 120, 123601] Published Fri Mar 23, 2018

Chaos in Dirac Electron Optics: Emergence of a Relativistic Quantum Chimera


Author(s): Hong-Ya Xu, Guang-Lei Wang, Liang Huang, and Ying-Cheng Lai

We uncover a remarkable quantum scattering phenomenon in two-dimensional Dirac material systems where the manifestations of both classically integrable and chaotic dynamics emerge simultaneously and are electrically controllable. The distinct relativistic quantum fingerprints associated with differe...

[Phys. Rev. Lett. 120, 124101] Published Fri Mar 23, 2018

Measurement of Transverse Wakefields Induced by a Misaligned Positron Bunch in a Hollow Channel Plasma Accelerator


Author(s): C. A. Lindstrøm, E. Adli, J. M. Allen, W. An, C. Beekman, C. I. Clarke, C. E. Clayton, S. Corde, A. Doche, J. Frederico, S. J. Gessner, S. Z. Green, M. J. Hogan, C. Joshi, M. Litos, W. Lu, K. A. Marsh, W. B. Mori, B. D. O’Shea, N. Vafaei-Najafabadi, and V. Yakimenko

Hollow channel plasma wakefield acceleration is a proposed method to provide high acceleration gradients for electrons and positrons alike: a key to future lepton colliders. However, beams which are misaligned from the channel axis induce strong transverse wakefields, deflecting beams and reducing t...

[Phys. Rev. Lett. 120, 124802] Published Fri Mar 23, 2018

Single-Shot Carrier-Envelope Phase Determination of Long Superintense Laser Pulses


Author(s): Jian-Xing Li, Yue-Yue Chen, Karen Z. Hatsagortsyan, and Christoph H. Keitel

The impact of the carrier-envelope phase (CEP) of an intense multicycle laser pulse on the radiation of an electron beam during nonlinear Compton scattering is investigated. We have identified a CEP effect specific to the ultrarelativistic regime. When the electron beam counterpropagates with the la...

[Phys. Rev. Lett. 120, 124803] Published Fri Mar 23, 2018

Subpercent-Scale Control of 3D Low Modes of Targets Imploded in Direct-Drive Configuration on OMEGA


Author(s): D. T. Michel, I. V. Igumenshchev, A. K. Davis, D. H. Edgell, D. H. Froula, D. W. Jacobs-Perkins, V. N. Goncharov, S. P. Regan, A. Shvydky, and E. M. Campbell

Multiple self-emission x-ray images are used to measure tomographically target modes 1, 2, and 3 up to the end of the target acceleration in direct-drive implosions on OMEGA. Results show that the modes consist of two components: the first varies linearly with the laser beam-energy balance and the s...

[Phys. Rev. Lett. 120, 125001] Published Fri Mar 23, 2018

Identification of a Catalytically Highly Active Surface Phase for CO Oxidation over PtRh Nanoparticles under Operando Reaction Conditions


Author(s): U. Hejral, D. Franz, S. Volkov, S. Francoual, J. Strempfer, and A. Stierle

Pt-Rh alloy nanoparticles on oxide supports are widely employed in heterogeneous catalysis with applications ranging from automotive exhaust control to energy conversion. To improve catalyst performance, an atomic-scale correlation of the nanoparticle surface structure with its catalytic activity un...

[Phys. Rev. Lett. 120, 126101] Published Fri Mar 23, 2018

Spin-Orbit Coupling and Electronic Correlations in ${\mathrm{Sr}}_{2}{\mathrm{RuO}}_{4}$


Author(s): Minjae Kim, Jernej Mravlje, Michel Ferrero, Olivier Parcollet, and Antoine Georges

We investigate the interplay of spin-orbit coupling (SOC) and electronic correlations in ${\mathrm{Sr}}_{2}{\mathrm{RuO}}_{4}$ using dynamical mean-field theory. We find that SOC does not affect the correlation-induced renormalizations, which validates Hund’s metal picture of ruthenates even in the ...

[Phys. Rev. Lett. 120, 126401] Published Fri Mar 23, 2018

Higher-Order Fermi-Liquid Corrections for an Anderson Impurity Away from Half Filling


Author(s): Akira Oguri and A. C. Hewson

We study the higher-order Fermi-liquid relations of Kondo systems for arbitrary impurity-electron fillings, extending the many-body quantum theoretical approach of Yamada and Yosida. It includes, partly, a microscopic clarification of the related achievements based on Nozières’ phenomenological desc...

[Phys. Rev. Lett. 120, 126802] Published Fri Mar 23, 2018

Spin-Torque Excitation of Perpendicular Standing Spin Waves in Coupled $\mathrm{YIG}/\mathrm{Co}$ Heterostructures


Author(s): Stefan Klingler, Vivek Amin, Stephan Geprägs, Kathrin Ganzhorn, Hannes Maier-Flaig, Matthias Althammer, Hans Huebl, Rudolf Gross, Robert D. McMichael, Mark D. Stiles, Sebastian T. B. Goennenwein, and Mathias Weiler

We investigate yttrium iron garnet (YIG)/cobalt (Co) heterostructures using broadband ferromagnetic resonance (FMR). We observe an efficient excitation of perpendicular standing spin waves (PSSWs) in the YIG layer when the resonance frequencies of the YIG PSSWs and the Co FMR line coincide. Avoided ...

[Phys. Rev. Lett. 120, 127201] Published Fri Mar 23, 2018

Floquet Engineering in Quantum Chains


Author(s): D. M. Kennes, A. de la Torre, A. Ron, D. Hsieh, and A. J. Millis

We consider a one-dimensional interacting spinless fermion model, which displays the well-known Luttinger liquid (LL) to charge density wave (CDW) transition as a function of the ratio between the strength of the interaction $U$ and the hopping $J$. We subject this system to a spatially uniform driv...

[Phys. Rev. Lett. 120, 127601] Published Fri Mar 23, 2018

Relaxation Dynamics of a Granular Pile on a Vertically Vibrating Plate


Author(s): Daisuke Tsuji, Michio Otsuki, and Hiroaki Katsuragi

Nonlinear relaxation dynamics of a vertically vibrated granular pile is experimentally studied. In the experiment, the flux and slope on the relaxing pile are measured by using a high-speed laser profiler. The relation of these quantities can be modeled by the nonlinear transport law assuming the un...

[Phys. Rev. Lett. 120, 128001] Published Fri Mar 23, 2018

Metastable Prepores in Tension-Free Lipid Bilayers


Author(s): Christina L. Ting, Neha Awasthi, Marcus Müller, and Jochen S. Hub

The formation and closure of aqueous pores in lipid bilayers is a key step in various biophysical processes. Large pores are well described by classical nucleation theory, but the free-energy landscape of small, biologically relevant pores has remained largely unexplored. The existence of small and ...

[Phys. Rev. Lett. 120, 128103] Published Fri Mar 23, 2018

Coupling between Inclusions and Membranes at the Nanoscale


Author(s): Florent Bories, Doru Constantin, Paolo Galatola, and Jean-Baptiste Fournier

The activity of cell membrane inclusions (such as ion channels) is influenced by the host lipid membrane, to which they are elastically coupled. This coupling concerns the hydrophobic thickness of the bilayer (imposed by the length of the channel, as per the hydrophobic matching principle) but also ...

[Phys. Rev. Lett. 120, 128104] Published Fri Mar 23, 2018

Erratum: Shrinking of Rapidly Evaporating Water Microdroplets Reveals their Extreme Supercooling [Phys. Rev. Lett. 120, 015501 (2018)]


Author(s): Claudia Goy, Marco A. C. Potenza, Sebastian Dedera, Marilena Tomut, Emmanuel Guillerm, Anton Kalinin, Kay-Obbe Voss, Alexander Schottelius, Nikolaos Petridis, Alexey Prosvetov, Guzmán Tejeda, José M. Fernández, Christina Trautmann, Frédéric Caupin, Ulrich Glasmacher, and Robert E. Grisenti
[Phys. Rev. Lett. 120, 129901] Published Fri Mar 23, 2018

Enhanced Communication with the Assistance of Indefinite Causal Order


Author(s): Daniel Ebler, Sina Salek, and Giulio Chiribella

In quantum Shannon theory, the way information is encoded and decoded takes advantage of the laws of quantum mechanics, while the way communication channels are interlinked is assumed to be classical. In this Letter, we relax the assumption that quantum channels are combined classically, showing tha...

[Phys. Rev. Lett. 120, 120502] Published Thu Mar 22, 2018

Strong Coupling Corrections in Quantum Thermodynamics


Author(s): M. Perarnau-Llobet, H. Wilming, A. Riera, R. Gallego, and J. Eisert

Quantum systems strongly coupled to many-body systems equilibrate to the reduced state of a global thermal state, deviating from the local thermal state of the system as it occurs in the weak-coupling limit. Taking this insight as a starting point, we study the thermodynamics of systems strongly cou...

[Phys. Rev. Lett. 120, 120602] Published Thu Mar 22, 2018

Toward a Definition of Complexity for Quantum Field Theory States


Author(s): Shira Chapman, Michal P. Heller, Hugo Marrochio, and Fernando Pastawski

We investigate notions of complexity of states in continuous many-body quantum systems. We focus on Gaussian states which include ground states of free quantum field theories and their approximations encountered in the context of the continuous version of the multiscale entanglement renormalization ...

[Phys. Rev. Lett. 120, 121602] Published Thu Mar 22, 2018

Properties of Nuclei up to $A=16$ using Local Chiral Interactions


Author(s): D. Lonardoni, J. Carlson, S. Gandolfi, J. E. Lynn, K. E. Schmidt, A. Schwenk, and X. B. Wang

We report accurate quantum Monte Carlo calculations of nuclei up to $A=16$ based on local chiral two- and three-nucleon interactions up to next-to-next-to-leading order. We examine the theoretical uncertainties associated with the chiral expansion and the cutoff in the theory, as well as the associa...

[Phys. Rev. Lett. 120, 122502] Published Thu Mar 22, 2018

Laser Cooled YbF Molecules for Measuring the Electron’s Electric Dipole Moment


Author(s): J. Lim, J. R. Almond, M. A. Trigatzis, J. A. Devlin, N. J. Fitch, B. E. Sauer, M. R. Tarbutt, and E. A. Hinds

We demonstrate one-dimensional sub-Doppler laser cooling of a beam of YbF molecules to $100\text{ }\text{ }μ\mathrm{K}$. This is a key step towards a measurement of the electron’s electric dipole moment using ultracold molecules. We compare the effectiveness of magnetically assisted and polarization...

[Phys. Rev. Lett. 120, 123201] Published Thu Mar 22, 2018

Limit on Excitation and Stabilization of Atoms in Intense Optical Laser Fields


Author(s): H. Zimmermann, S. Meise, A. Khujakulov, A. Magaña, A. Saenz, and U. Eichmann

Atomic excitation in strong optical laser fields has been found to take place even at intensities exceeding saturation. The concomitant acceleration of the atom in the focused laser field has been considered a strong link to, if not proof of, the existence of the so-called Kramers-Henneberger (KH) a...

[Phys. Rev. Lett. 120, 123202] Published Thu Mar 22, 2018

Odd-Time Reversal $\mathcal{P}\mathcal{T}$ Symmetry Induced by an Anti-$\mathcal{P}\mathcal{T}$-Symmetric Medium


Author(s): Vladimir V. Konotop and Dmitry A. Zezyulin

We introduce an optical system (a coupler) obeying parity-time ($\mathcal{P}\mathcal{T}$) symmetry with odd-time reversal, ${\mathcal{T}}^{2}=−1$. It is implemented with two birefringent waveguides embedded in an anti-$\mathcal{P}\mathcal{T}$-symmetric medium. The system possesses properties that ar...

[Phys. Rev. Lett. 120, 123902] Published Thu Mar 22, 2018

Observation of Dynamical Super-Efimovian Expansion in a Unitary Fermi Gas


Author(s): Shujin Deng, Pengpeng Diao, Fang Li, Qianli Yu, Shi Yu, and Haibin Wu

We report an observation of a dynamical super Efimovian expansion in a strongly interacting Fermi gas by engineering time dependent external harmonic trap frequencies. When the trap frequency is tailored as $[1/4{t}^{2}+1/{t}^{2}λ{\mathrm{log}}^{2}(t/{t}_{*}){]}^{1/2}$, where ${t}_{*}$ and $λ$ are t...

[Phys. Rev. Lett. 120, 125301] Published Thu Mar 22, 2018

Predicting Shear Transformation Events in Metallic Glasses


Author(s): Bin Xu, Michael L. Falk, J. F. Li, and L. T. Kong

Shear transformation is the elementary process for plastic deformation of metallic glasses, the prediction of the occurrence of the shear transformation events is therefore of vital importance to understand the mechanical behavior of metallic glasses. In this Letter, from the view of the potential e...

[Phys. Rev. Lett. 120, 125503] Published Thu Mar 22, 2018

Abnormal Strain Rate Sensitivity Driven by a Unit Dislocation-Obstacle Interaction in bcc Fe


Author(s): Zhitong Bai and Yue Fan

The interaction between an edge dislocation and a sessile vacancy cluster in bcc Fe is investigated over a wide range of strain rates from ${10}^{8}$ down to ${10}^{3}\text{ }\text{ }{\mathrm{s}}^{−1}$, which is enabled by employing an energy landscape-based atomistic modeling algorithm. It is obser...

[Phys. Rev. Lett. 120, 125504] Published Thu Mar 22, 2018

Thermal Transport and Phonon Hydrodynamics in Strontium Titanate


Author(s): Valentina Martelli, Julio Larrea Jiménez, Mucio Continentino, Elisa Baggio-Saitovitch, and Kamran Behnia

In strontium titanate phonons drift like a cloud under the influence of a thermal gradient.

[Phys. Rev. Lett. 120, 125901] Published Thu Mar 22, 2018

Ion Correlation Effects in Salt-Doped Block Copolymers


Author(s): Jonathan R. Brown, Youngmi Seo, and Lisa M. Hall

We apply classical density functional theory to study how salt changes the microphase morphology of diblock copolymers. Polymers are freely jointed and one monomer type favorably interacts with ions, to account for the selective solvation that arises from different dielectric constants of the microp...

[Phys. Rev. Lett. 120, 127801] Published Thu Mar 22, 2018

Decay Rate of the Nuclear Isomer $^{229}\mathrm{Th}(3/{2}^{+},7.8\text{  }\mathrm{eV})$ in a Dielectric Sphere, Thin Film, and Metal Cavity


Author(s): E. V. Tkalya

The rate of a nuclear transition of thorium-229 can be controlled by placing the atom in a cavity or in a thin film—an effect that could lead to ultraprecise nuclear clocks.

[Phys. Rev. Lett. 120, 122501] Published Wed Mar 21, 2018

Self-Induced Backaction Optical Pulling Force


Author(s): Tongtong Zhu, Yongyin Cao, Lin Wang, Zhongquan Nie, Tun Cao, Fangkui Sun, Zehui Jiang, Manuel Nieto-Vesperinas, Yongmin Liu, Cheng-Wei Qiu, and Weiqiang Ding

We achieve long-range and continuous optical pulling in a periodic photonic crystal background, which supports a unique Bloch mode with the self-collimation effect. Most interestingly, the pulling force reported here is mainly contributed by the intensity gradient force originating from the self-ind...

[Phys. Rev. Lett. 120, 123901] Published Wed Mar 21, 2018

Revealing the Link between Structural Relaxation and Dynamic Heterogeneity in Glass-Forming Liquids


Author(s): Lijin Wang, Ning Xu, W. H. Wang, and Pengfei Guan

Despite the use of glasses for thousands of years, the nature of the glass transition is still mysterious. On approaching the glass transition, the growth of dynamic heterogeneity has long been thought to play a key role in explaining the abrupt slowdown of structural relaxation. However, it still r...

[Phys. Rev. Lett. 120, 125502] Published Wed Mar 21, 2018

Coherent Electron Transfer at the $\mathrm{Ag}/\mathrm{Graphite}$ Heterojunction Interface


Author(s): Shijing Tan, Yanan Dai, Shengmin Zhang, Liming Liu, Jin Zhao, and Hrvoje Petek

Charge transfer in transduction of light to electrical or chemical energy at heterojunctions of metals with semiconductors or semimetals is believed to occur by photogenerated hot electrons in metal undergoing incoherent internal photoemission through the heterojunction interface. Charge transfer, h...

[Phys. Rev. Lett. 120, 126801] Published Wed Mar 21, 2018

Stochastic Model of Breakdown Nucleation under Intense Electric Fields


Author(s): Eliyahu Zvi Engelberg, Yinon Ashkenazy, and Michael Assaf

A plastic response due to dislocation activity under intense electric fields is proposed as a source of breakdown. A model is formulated based on stochastic multiplication and arrest under the stress generated by the field. A critical transition in the dislocation population is suggested as the caus...

[Phys. Rev. Lett. 120, 124801] Published Tue Mar 20, 2018

Experimental Observation of a Generalized Thouless Pump with a Single Spin


Author(s): Wenchao Ma, Longwen Zhou, Qi Zhang, Min Li, Chunyang Cheng, Jianpei Geng, Xing Rong, Fazhan Shi, Jiangbin Gong, and Jiangfeng Du

Adiabatic cyclic modulation of a one-dimensional periodic potential will result in quantized charge transport, which is termed the Thouless pump. In contrast to the original Thouless pump restricted by the topology of the energy band, here we experimentally observe a generalized Thouless pump that c...

[Phys. Rev. Lett. 120, 120501] Published Mon Mar 19, 2018

Narrow Escape of Interacting Diffusing Particles


Author(s): Tal Agranov and Baruch Meerson

The narrow escape problem deals with the calculation of the mean escape time (MET) of a Brownian particle from a bounded domain through a small hole on the domain’s boundary. Here we develop a formalism which allows us to evaluate the nonescape probability of a gas of diffusing particles that may in...

[Phys. Rev. Lett. 120, 120601] Published Mon Mar 19, 2018

Fine Grained Chaos in ${\mathrm{AdS}}_{2}$ Gravity


Author(s): Felix M. Haehl and Moshe Rozali

Quantum chaos can be characterized by an exponential growth of the thermal out-of-time-order four-point function up to a scrambling time ${\stackrel{^}{u}}_{*}$. We discuss generalizations of this statement for certain higher-point correlation functions. For concreteness, we study the Schwarzian the...

[Phys. Rev. Lett. 120, 121601] Published Mon Mar 19, 2018

Control of Nuclear Dynamics through Conical Intersections and Electronic Coherences


Author(s): Caroline Arnold, Oriol Vendrell, Ralph Welsch, and Robin Santra

The effect of nuclear dynamics and conical intersections on electronic coherences is investigated employing a two-state, two-mode linear vibronic coupling model. Exact quantum dynamical calculations are performed using the multiconfiguration time-dependent Hartree method. It is found that the presen...

[Phys. Rev. Lett. 120, 123001] Published Mon Mar 19, 2018

Exceeding the Asymptotic Limit of Polymer Drag Reduction


Author(s): George H. Choueiri, Jose M. Lopez, and Björn Hof

Adding polymer to a liquid was thought to reduce drag only up to a point, but new experiments have found exceptions to the usual limit.

[Phys. Rev. Lett. 120, 124501] Published Mon Mar 19, 2018

Unidirectional Wave Vector Manipulation in Two-Dimensional Space with an All Passive Acoustic Parity-Time-Symmetric Metamaterials Crystal


Author(s): Tuo Liu, Xuefeng Zhu, Fei Chen, Shanjun Liang, and Jie Zhu

Exploring the concept of non-Hermitian Hamiltonians respecting parity-time symmetry with classical wave systems is of great interest as it enables the experimental investigation of parity-time-symmetric systems through the quantum-classical analogue. Here, we demonstrate unidirectional wave vector m...

[Phys. Rev. Lett. 120, 124502] Published Mon Mar 19, 2018

Coherent Structures and Spectral Energy Transfer in Turbulent Plasma: A Space-Filter Approach


Author(s): E. Camporeale, L. Sorriso-Valvo, F. Califano, and A. Retinò

Plasma turbulence at scales of the order of the ion inertial length is mediated by several mechanisms, including linear wave damping, magnetic reconnection, the formation and dissipation of thin current sheets, and stochastic heating. It is now understood that the presence of localized coherent stru...

[Phys. Rev. Lett. 120, 125101] Published Mon Mar 19, 2018

Nonreciprocal Thermal Material by Spatiotemporal Modulation


Author(s): Daniel Torrent, Olivier Poncelet, and Jean-Chirstophe Batsale

The thermal properties of a material with a spatiotemporal modulation, in the form of a traveling wave, in both the thermal conductivity and the specific heat capacity are studied. It is found that these materials behave as materials with an internal convectionlike term that provides them with nonre...

[Phys. Rev. Lett. 120, 125501] Published Mon Mar 19, 2018

Deciphering mRNA Sequence Determinants of Protein Production Rate


Author(s): Juraj Szavits-Nossan, Luca Ciandrini, and M. Carmen Romano

One of the greatest challenges in biophysical models of translation is to identify coding sequence features that affect the rate of translation and therefore the overall protein production in the cell. We propose an analytic method to solve a translation model based on the inhomogeneous totally asym...

[Phys. Rev. Lett. 120, 128101] Published Mon Mar 19, 2018

Minimum Action Path Theory Reveals the Details of Stochastic Transitions Out of Oscillatory States


Author(s): Roberto de la Cruz, Ruben Perez-Carrasco, Pilar Guerrero, Tomas Alarcon, and Karen M. Page

Cell state determination is the outcome of intrinsically stochastic biochemical reactions. Transitions between such states are studied as noise-driven escape problems in the chemical species space. Escape can occur via multiple possible multidimensional paths, with probabilities depending nonlocally...

[Phys. Rev. Lett. 120, 128102] Published Mon Mar 19, 2018

Visibility-Based Hypothesis Testing Using Higher-Order Optical Interference


Author(s): Michał Jachura, Marcin Jarzyna, Michał Lipka, Wojciech Wasilewski, and Konrad Banaszek

Many quantum information protocols rely on optical interference to compare data sets with efficiency or security unattainable by classical means. Standard implementations exploit first-order coherence between signals whose preparation requires a shared phase reference. Here, we analyze and experimen...

[Phys. Rev. Lett. 120, 110502] Published Fri Mar 16, 2018

Duality in Power-Law Localization in Disordered One-Dimensional Systems


Author(s): X. Deng, V. E. Kravtsov, G. V. Shlyapnikov, and L. Santos

The transport of excitations between pinned particles in many physical systems may be mapped to single-particle models with power-law hopping, $1/{r}^{a}$. For randomly spaced particles, these models present an effective peculiar disorder that leads to surprising localization properties. We show tha...

[Phys. Rev. Lett. 120, 110602] Published Fri Mar 16, 2018

Clean Floquet Time Crystals: Models and Realizations in Cold Atoms


Author(s): Biao Huang, Ying-Hai Wu, and W. Vincent Liu

Time crystals, a phase showing spontaneous breaking of time-translation symmetry, has been an intriguing subject for systems far away from equilibrium. Recent experiments found such a phase in both the presence and the absence of localization, while in theories localization by disorder is usually as...

[Phys. Rev. Lett. 120, 110603] Published Fri Mar 16, 2018

Directional Sensitivity in Light-Mass Dark Matter Searches with Single-Electron-Resolution Ionization Detectors


Author(s): Fedja Kadribasic, Nader Mirabolfathi, Kai Nordlund, Andrea E. Sand, Eero Holmström, and Flyura Djurabekova

We propose a method using solid state detectors with directional sensitivity to dark matter interactions to detect low-mass weakly interacting massive particles (WIMPs) originating from galactic sources. In spite of a large body of literature for high-mass WIMP detectors with directional sensitivity...

[Phys. Rev. Lett. 120, 111301] Published Fri Mar 16, 2018

Accurate Mapping of Multilevel Rydberg Atoms on Interacting Spin-$1/2$ Particles for the Quantum Simulation of Ising Models


Author(s): Sylvain de Léséleuc, Sebastian Weber, Vincent Lienhard, Daniel Barredo, Hans Peter Büchler, Thierry Lahaye, and Antoine Browaeys

We study a system of atoms that are laser driven to $n{D}_{3/2}$ Rydberg states and assess how accurately they can be mapped onto spin-$1/2$ particles for the quantum simulation of anisotropic Ising magnets. Using nonperturbative calculations of the pair potentials between two atoms in the presence ...

[Phys. Rev. Lett. 120, 113602] Published Fri Mar 16, 2018

Directional Dicke Subradiance with Nonclassical and Classical Light Sources


Author(s): Daniel Bhatti, Raimund Schneider, Steffen Oppel, and Joachim von Zanthier

We investigate Dicke subradiance of $N≥2$ distant quantum sources in free space, i.e., the spatial emission patterns of spontaneously radiating noninteracting multilevel atoms or multiphoton sources, prepared in totally antisymmetric states. We find that the radiated intensity is marked by a full su...

[Phys. Rev. Lett. 120, 113603] Published Fri Mar 16, 2018

Ab Initio Calculation of the Miscibility Diagram for Hydrogen-Helium Mixtures


Author(s): Manuel Schöttler and Ronald Redmer

We use finite-temperature density functional theory coupled to classical molecular dynamics simulation to calculate the miscibility gap of hydrogen-helium mixtures. The van der Waals density functional (vdW-DF) theory is used, which leads to lower demixing temperatures compared to computations using...

[Phys. Rev. Lett. 120, 115703] Published Fri Mar 16, 2018

Kinetic Theory of Electronic Transport in Random Magnetic Fields


Author(s): Andrew Lucas

We present the theory of quasiparticle transport in perturbatively small inhomogeneous magnetic fields across the ballistic-to-hydrodynamic crossover. In the hydrodynamic limit, the resistivity $ρ$ generically grows proportionally to the rate of momentum-conserving electron-electron collisions at la...

[Phys. Rev. Lett. 120, 116603] Published Fri Mar 16, 2018

Charge Order and Superconductivity in Underdoped ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7−δ}$ under Pressure


Author(s): Carsten Putzke, Jake Ayres, Jonathan Buhot, Salvatore Licciardello, Nigel E. Hussey, Sven Friedemann, and Antony Carrington

In underdoped cuprates, an incommensurate charge density wave (CDW) order is known to coexist with superconductivity. A dip in ${T}_{c}$ at the hole doping level where the CDW is strongest (${n}_{p}≃0.12$) suggests that CDW order may suppress superconductivity. We investigate the interplay of charge...

[Phys. Rev. Lett. 120, 117002] Published Fri Mar 16, 2018

Switching a Perpendicular Ferromagnetic Layer by Competing Spin Currents


Author(s): Qinli Ma, Yufan Li, D. B. Gopman, Yu. P. Kabanov, R. D. Shull, and C. L. Chien

An ultimate goal of spintronics is to control magnetism via electrical means. One promising way is to utilize a current-induced spin-orbit torque (SOT) originating from the strong spin-orbit coupling in heavy metals and their interfaces to switch a single perpendicularly magnetized ferromagnetic lay...

[Phys. Rev. Lett. 120, 117703] Published Fri Mar 16, 2018

Comment on “Continuum Lowering and Fermi-Surface Rising in Strongly Coupled and Degenerate Plasmas”


Author(s): Carlos A. Iglesias and Philip A. Sterne
[Phys. Rev. Lett. 120, 119501] Published Fri Mar 16, 2018

Hu Replies:


Author(s): S. X. Hu (胡素兴)
[Phys. Rev. Lett. 120, 119502] Published Fri Mar 16, 2018

Publisher’s Note: Incoherence-Mediated Remote Synchronization [Phys. Rev. Lett. 118, 174102 (2017)]


Author(s): Liyue Zhang, Adilson E. Motter, and Takashi Nishikawa
[Phys. Rev. Lett. 120, 119901] Published Fri Mar 16, 2018

Gravitational-Wave Luminosity of Binary Neutron Stars Mergers


Author(s): Francesco Zappa, Sebastiano Bernuzzi, David Radice, Albino Perego, and Tim Dietrich

We study the gravitational-wave peak luminosity and radiated energy of quasicircular neutron star mergers using a large sample of numerical relativity simulations with different binary parameters and input physics. The peak luminosity for all the binaries can be described in terms of the mass ratio ...

[Phys. Rev. Lett. 120, 111101] Published Thu Mar 15, 2018

Strongly $γ$-Deformed $\mathcal{N}=4$ Supersymmetric Yang-Mills Theory as an Integrable Conformal Field Theory


Author(s): David Grabner, Nikolay Gromov, Vladimir Kazakov, and Gregory Korchemsky

We demonstrate by explicit multiloop calculation that $γ$-deformed planar $\mathcal{N}=4$ supersymmetric Yang-Mills (SYM) theory, supplemented with a set of double-trace counterterms, has two nontrivial fixed points in the recently proposed double scaling limit, combining vanishing ’t Hooft coupling...

[Phys. Rev. Lett. 120, 111601] Published Thu Mar 15, 2018

Off-Shell Higgs Probe of Naturalness


Author(s): Dorival Gonçalves, Tao Han, and Satyanarayan Mukhopadhyay

Examining the Higgs sector at high energy scales through off-shell Higgs production can potentially shed light on the naturalness problem of the Higgs boson mass. We propose such a study at the LHC by utilizing a representative model with a new scalar field ($S$) coupled to the standard model Higgs ...

[Phys. Rev. Lett. 120, 111801] Published Thu Mar 15, 2018

Edge-Mode Lasing in 1D Topological Active Arrays


Author(s): Midya Parto, Steffen Wittek, Hossein Hodaei, Gal Harari, Miguel A. Bandres, Jinhan Ren, Mikael C. Rechtsman, Mordechai Segev, Demetrios N. Christodoulides, and Mercedeh Khajavikhan

We report the first observation of lasing topological edge states in a 1D Su-Schrieffer-Heeger active array of microring resonators. We show that the judicious use of non-Hermiticity can promote single edge-mode lasing in such arrays. Our experimental and theoretical results demonstrate that, in the...

[Phys. Rev. Lett. 120, 113901] Published Thu Mar 15, 2018

Nonresonant Local Fields Enhance Second-Harmonic Generation from Metal Nanoislands with Dielectric Cover


Author(s): Semyon Chervinskii, Kalle Koskinen, Sergey Scherbak, Martti Kauranen, and Andrey Lipovskii

Second-harmonic generation from Au metal nanoislands is significantly enhanced by covering the nanoislands with a thin dielectric film of titanium dioxide.

[Phys. Rev. Lett. 120, 113902] Published Thu Mar 15, 2018

Demonstration of Cascaded Modulator-Chicane Microbunching of a Relativistic Electron Beam


Author(s): N. Sudar, P. Musumeci, I. Gadjev, Y. Sakai, S. Fabbri, M. Polyanskiy, I. Pogorelsky, M. Fedurin, C. Swinson, K. Kusche, M. Babzien, and M. Palmer

We present results of an experiment showing the first successful demonstration of a cascaded microbunching scheme. Two modulator-chicane prebunchers arranged in series and a high power mid-IR laser seed are used to modulate a 52 MeV electron beam into a train of sharp microbunches phase locked to th...

[Phys. Rev. Lett. 120, 114802] Published Thu Mar 15, 2018

Unusual Crystallization Behavior Close to the Glass Transition


Author(s): Caroline Desgranges and Jerome Delhommelle

Using molecular simulations, we shed light on the mechanism underlying crystal nucleation in metal alloys and unravel the interplay between crystal nucleation and glass transition, as the conditions of crystallization lie close to this transition. While decreasing the temperature of crystallization ...

[Phys. Rev. Lett. 120, 115701] Published Thu Mar 15, 2018

Continuous Easy-Plane Deconfined Phase Transition on the Kagome Lattice


Author(s): Xue-Feng Zhang (张学锋), Yin-Chen He, Sebastian Eggert, Roderich Moessner, and Frank Pollmann

We use large scale quantum Monte Carlo simulations to study an extended Hubbard model of hard core bosons on the kagome lattice. In the limit of strong nearest-neighbor interactions at $1/3$ filling, the interplay between frustration and quantum fluctuations leads to a valence bond solid ground stat...

[Phys. Rev. Lett. 120, 115702] Published Thu Mar 15, 2018

Electrochemical Impedance Imaging via the Distribution of Diffusion Times


Author(s): Juhyun Song and Martin Z. Bazant

We develop a mathematical framework to analyze electrochemical impedance spectra in terms of a distribution of diffusion times (DDT) for a parallel array of random finite-length Warburg (diffusion) or Gerischer (reaction-diffusion) circuit elements. A robust DDT inversion method is presented based o...

[Phys. Rev. Lett. 120, 116001] Published Thu Mar 15, 2018

Topological $π$ Junctions from Crossed Andreev Reflection in the Quantum Hall Regime


Author(s): F. Finocchiaro, F. Guinea, and P. San-Jose

We consider a two-dimensional electron gas (2DEG) in the quantum Hall regime in the presence of a Zeeman field, with the Fermi level tuned to a filling factor of $ν=1$. We show that, in the presence of spin-orbit coupling, contacting the 2DEG with a narrow strip of an $s$-wave superconductor produce...

[Phys. Rev. Lett. 120, 116801] Published Thu Mar 15, 2018

Valley Topological Phases in Bilayer Sonic Crystals


Author(s): Jiuyang Lu, Chunyin Qiu, Weiyin Deng, Xueqin Huang, Feng Li, Fan Zhang, Shuqi Chen, and Zhengyou Liu

Recently, the topological physics in artificial crystals for classical waves has become an emerging research area. In this Letter, we propose a unique bilayer design of sonic crystals that are constructed by two layers of coupled hexagonal array of triangular scatterers. Assisted by the additional l...

[Phys. Rev. Lett. 120, 116802] Published Thu Mar 15, 2018

Avalanches and Criticality in Driven Magnetic Skyrmions


Author(s): S. A. Díaz, C. Reichhardt, D. P. Arovas, A. Saxena, and C. J. O. Reichhardt

We show using numerical simulations that slowly driven Skyrmions interacting with random pinning move via correlated jumps or avalanches. The avalanches exhibit power-law distributions in their duration and size, and the average avalanche shape for different avalanche durations can be scaled to a un...

[Phys. Rev. Lett. 120, 117203] Published Thu Mar 15, 2018

Unusual Phonon Heat Transport in $α\text{−}{\mathrm{RuCl}}_{3}$: Strong Spin-Phonon Scattering and Field-Induced Spin Gap


Author(s): Richard Hentrich, Anja U. B. Wolter, Xenophon Zotos, Wolfram Brenig, Domenic Nowak, Anna Isaeva, Thomas Doert, Arnab Banerjee, Paula Lampen-Kelley, David G. Mandrus, Stephen E. Nagler, Jennifer Sears, Young-June Kim, Bernd Büchner, and Christian Hess

The honeycomb Kitaev-Heisenberg model is a source of a quantum spin liquid with Majorana fermions and gauge flux excitations as fractional quasiparticles. Here we unveil the highly unusual low-temperature heat conductivity $κ$ of $α\text{−}{\mathrm{RuCl}}_{3}$, a prime candidate for realizing such p...

[Phys. Rev. Lett. 120, 117204] Published Thu Mar 15, 2018

On-Demand Generation of Neutral and Negatively Charged Silicon-Vacancy Centers in Diamond


Author(s): Siddharth Dhomkar, Pablo R. Zangara, Jacob Henshaw, and Carlos A. Meriles

Point defects in wide-band-gap semiconductors are emerging as versatile resources for nanoscale sensing and quantum information science, but our understanding of the photoionization dynamics is presently incomplete. Here, we use two-color confocal microscopy to investigate the dynamics of charge in ...

[Phys. Rev. Lett. 120, 117401] Published Thu Mar 15, 2018

Janus and Huygens Dipoles: Near-Field Directionality Beyond Spin-Momentum Locking


Author(s): Michela F. Picardi, Anatoly V. Zayats, and Francisco J. Rodríguez-Fortuño

A proposed dipole source of electromagnetic waves can selectively couple its emission into either of two neighboring waveguides.

[Phys. Rev. Lett. 120, 117402] Published Thu Mar 15, 2018

High-Power Collective Charging of a Solid-State Quantum Battery


Author(s): Dario Ferraro, Michele Campisi, Gian Marcello Andolina, Vittorio Pellegrini, and Marco Polini

Theoretical predictions suggest a quantum battery could be implemented in either nanofabricated semiconductor quantum dots in a photonic cavity or superconducting qubits.

[Phys. Rev. Lett. 120, 117702] Published Thu Mar 15, 2018

Direct Measurement of Lateral Correlations under Controlled Nanoconfinement


Author(s): P. Kékicheff, J. Iss, P. Fontaine, and A. Johner

Lateral correlations along hydrophobic surfaces whose separation can be varied continuously are measured by x-ray scattering using a modified surface force apparatus coupled with synchrotron radiation, named SFAX. A weak isotropic diffuse scattering along the equatorial plane is revealed for mica su...

[Phys. Rev. Lett. 120, 118001] Published Thu Mar 15, 2018

Nanoscale Rheology and Anisotropic Diffusion Using Single Gold Nanorod Probes


Author(s): Mehdi Molaei, Ehsan Atefi, and John C. Crocker

The complex rotational and translational Brownian motion of anisotropic particles depends on their shape and the viscoelasticity of their surroundings. Because of their strong optical scattering and chemical versatility, gold nanorods would seem to provide the ultimate probes of rheology at the nano...

[Phys. Rev. Lett. 120, 118002] Published Thu Mar 15, 2018

Possible Many-Body Localization in a Long-Lived Finite-Temperature Ultracold Quasineutral Molecular Plasma


Author(s): John Sous and Edward Grant

We argue that the quenched ultracold plasma presents an experimental platform for studying the quantum many-body physics of disordered systems in the long-time and finite energy-density limits. We consider an experiment that quenches a plasma of nitric oxide to an ultracold system of Rydberg molecul...

[Phys. Rev. Lett. 120, 110601] Published Wed Mar 14, 2018

Origin of Negative Capacitance in Bipolar Organic Diodes


Author(s): Quan Niu, N. Irina Crăciun, Gert-Jan A. H. Wetzelaer, and Paul W. M. Blom

Trap-assisted recombination is identified as the mechanism responsible for the negative contribution to the capacitance in bipolar organic diodes.

[Phys. Rev. Lett. 120, 116602] Published Wed Mar 14, 2018

Higgs Mode in the $d$-Wave Superconductor ${\mathrm{Bi}}_{2}{\mathrm{Sr}}_{2}{\mathrm{CaCu}}_{2}{\mathrm{O}}_{8+x}$ Driven by an Intense Terahertz Pulse


Author(s): Kota Katsumi, Naoto Tsuji, Yuki I. Hamada, Ryusuke Matsunaga, John Schneeloch, Ruidan D. Zhong, Genda D. Gu, Hideo Aoki, Yann Gallais, and Ryo Shimano

Terahertz-pulse excitation experiments provide evidence for a Higgs mode in a d-wave-type, high-temperature cuprate superconductor.

[Phys. Rev. Lett. 120, 117001] Published Wed Mar 14, 2018

Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscope


Author(s): G. Berruto, I. Madan, Y. Murooka, G. M. Vanacore, E. Pomarico, J. Rajeswari, R. Lamb, P. Huang, A. J. Kruchkov, Y. Togawa, T. LaGrange, D. McGrouther, H. M. Rønnow, and F. Carbone

Experiments on the optical writing and erasing of magnetic skyrmions in FeGe indicate that more efficient skyrmion generation can be achieved in a cooled sample.

[Phys. Rev. Lett. 120, 117201] Published Wed Mar 14, 2018

Quantum Simulation of Electronic Structure with Linear Depth and Connectivity


Author(s): Ian D. Kivlichan, Jarrod McClean, Nathan Wiebe, Craig Gidney, Alán Aspuru-Guzik, Garnet Kin-Lic Chan, and Ryan Babbush

As physical implementations of quantum architectures emerge, it is increasingly important to consider the cost of algorithms for practical connectivities between qubits. We show that by using an arrangement of gates that we term the fermionic swap network, we can simulate a Trotter step of the elect...

[Phys. Rev. Lett. 120, 110501] Published Tue Mar 13, 2018

Renormalization in Large Momentum Effective Theory of Parton Physics


Author(s): Xiangdong Ji, Jian-Hui Zhang, and Yong Zhao

In the large-momentum effective field theory approach to parton physics, the matrix elements of nonlocal operators of quark and gluon fields, linked by straight Wilson lines in a spatial direction, are calculated in lattice quantum chromodynamics as a function of hadron momentum. Using the heavy-qua...

[Phys. Rev. Lett. 120, 112001] Published Tue Mar 13, 2018

Alignment and Imaging of the ${\mathrm{CS}}_{2}$ Dimer Inside Helium Nanodroplets


Author(s): James D. Pickering, Benjamin Shepperson, Bjarke A. K. Hübschmann, Frederik Thorning, and Henrik Stapelfeldt

The carbon disulphide (${\mathrm{CS}}_{2}$) dimer is formed inside He nanodroplets and identified using fs laser-induced Coulomb explosion, by observing the ${\mathrm{CS}}_{2}^{+}$ ion recoil velocity. It is then shown that a 160 ps moderately intense laser pulse can align the dimer in advantageous ...

[Phys. Rev. Lett. 120, 113202] Published Tue Mar 13, 2018

Near-Threshold Ionization of Argon by Positron Impact


Author(s): T. J. Babij, J. R. Machacek, D. J. Murtagh, S. J. Buckman, and J. P. Sullivan

The direct single-ionization cross section for Ar by positron impact has been measured in the region above the first ionization threshold. These measurements are compared to semiclassical calculations which give rise to a power law variation of the cross section in the threshold region. The experime...

[Phys. Rev. Lett. 120, 113401] Published Tue Mar 13, 2018

Photon Subtraction by Many-Body Decoherence


Author(s): C. R. Murray, I. Mirgorodskiy, C. Tresp, C. Braun, A. Paris-Mandoki, A. V. Gorshkov, S. Hofferberth, and T. Pohl

A new decoherence-suppression mechanism in photon-photon scattering is revealed in a Rydberg electromagnetically-induced transparent medium.

[Phys. Rev. Lett. 120, 113601] Published Tue Mar 13, 2018

Acoustic Purcell Effect for Enhanced Emission


Author(s): Maryam Landi, Jiajun Zhao, Wayne E. Prather, Ying Wu, and Likun Zhang

We observe that our experimentally measured emission power enhancement of a speaker inside a previously proposed metacavity agrees with our numerically calculated enhancement of the density of states (DOS) of the source-cavity system. We interpret the agreement by formulating a relation between the ...

[Phys. Rev. Lett. 120, 114301] Published Tue Mar 13, 2018

Observation of High Transformer Ratio of Shaped Bunch Generated by an Emittance-Exchange Beam Line


Author(s): Q. Gao, G. Ha, C. Jing, S. P. Antipov, J. G. Power, M. Conde, W. Gai, H. Chen, J. Shi, E. E. Wisniewski, D. S. Doran, W. Liu, C. E. Whiteford, A. Zholents, P. Piot, and S. S. Baturin

Collinear wakefield acceleration has been long established as a method capable of generating ultrahigh acceleration gradients. Because of the success on this front, recently, more efforts have shifted towards developing methods to raise the transformer ratio (TR). This figure of merit is defined as ...

[Phys. Rev. Lett. 120, 114801] Published Tue Mar 13, 2018

Resolving Point Defects in the Hydration Structure of Calcite (10.4) with Three-Dimensional Atomic Force Microscopy


Author(s): Hagen Söngen, Bernhard Reischl, Kazuki Miyata, Ralf Bechstein, Paolo Raiteri, Andrew L. Rohl, Julian D. Gale, Takeshi Fukuma, and Angelika Kühnle

It seems natural to assume that defects at mineral surfaces critically influence interfacial processes such as the dissolution and growth of minerals in water. The experimental verification of this claim, however, is challenging and requires real-space methods with utmost spatial resolution, such as...

[Phys. Rev. Lett. 120, 116101] Published Tue Mar 13, 2018

Macroscopically Degenerate Exactly Solvable Point in the Spin-$1/2$ Kagome Quantum Antiferromagnet


Author(s): Hitesh J. Changlani, Dmitrii Kochkov, Krishna Kumar, Bryan K. Clark, and Eduardo Fradkin

A previously unseen macroscopic degeneracy is predicted in spin-1/2 kagome antiferromagnets, explaining the presence and absence of spin liquids in various regions of the phase diagram.

[Phys. Rev. Lett. 120, 117202] Published Tue Mar 13, 2018

Prediction of a Large-Gap and Switchable Kane-Mele Quantum Spin Hall Insulator


Author(s): Antimo Marrazzo, Marco Gibertini, Davide Campi, Nicolas Mounet, and Nicola Marzari

Fundamental research and technological applications of topological insulators are hindered by the rarity of materials exhibiting a robust topologically nontrivial phase, especially in two dimensions. Here, by means of extensive first-principles calculations, we propose a novel quantum spin Hall insu...

[Phys. Rev. Lett. 120, 117701] Published Tue Mar 13, 2018

Three Phase-Grating Moiré Neutron Interferometer for Large Interferometer Area Applications


Author(s): D. Sarenac, D. A. Pushin, M. G. Huber, D. S. Hussey, H. Miao, M. Arif, D. G. Cory, A. D. Cronin, B. Heacock, D. L. Jacobson, J. M. LaManna, and H. Wen

A new and more flexible neutron interferometer design relies on the moiré effect, in which two periodic patterns are combined to give a longer-period pattern.

[Phys. Rev. Lett. 120, 113201] Published Mon Mar 12, 2018

Localization of Interacting Dirac Fermions


Author(s): Tianxing Ma, Lufeng Zhang, Chia-Chen Chang, Hsiang-Hsuan Hung, and Richard T. Scalettar

Using exact quantum Monte Carlo calculations, we examine the interplay between localization of electronic states driven by many-body correlations and that by randomness in a two-dimensional system featuring linearly vanishing density of states at the Fermi level. A novel disorder-induced nonmagnetic...

[Phys. Rev. Lett. 120, 116601] Published Mon Mar 12, 2018

Dynamics of Three-Body Correlations in Quenched Unitary Bose Gases


Author(s): V. E. Colussi, J. P. Corson, and J. P. D’Incao

We investigate dynamical three-body correlations in the Bose gas during the earliest stages of evolution after a quench to the unitary regime. The development of few-body correlations is theoretically observed by determining the two- and three-body contacts. We find that the growth of three-body cor...

[Phys. Rev. Lett. 120, 100401] Published Fri Mar 09, 2018