Volume 119, Issue 2

14 July 2017

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On the Cover

Snapshots showing fluid velocity from simulations of self-propelled microswimmer suspensions below (left) and above (right) the transition to turbulence. Arrows denote the in-plane fluid velocity; the color map shows the out-of-plane component. Selected for a Synopsis in Physics.

From the article:

Role of Correlations in the Collective Behavior of Microswimmer Suspensions
Joakim Stenhammar, Cesare Nardini, Rupert W. Nash, Davide Marenduzzo, and Alexander Morozov
Phys. Rev. Lett. 119, 028005 (2017)

HIGHLIGHTED ARTICLES

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Radiative Rotational Lifetimes and State-Resolved Relative Detachment Cross Sections from Photodetachment Thermometry of Molecular Anions in a Cryogenic Storage Ring

C. Meyer et al.

Phys. Rev. Lett. 119, 023202 (2017) - Published 14 July, 2017

A beam of molecules is cooled through radiative rotation using a cryogenic storage ring without buffer gas, enabling natural lifetime measurements of lowest rotational levels in the molecules.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Compression Freezing Kinetics of Water to Ice VII

A. E. Gleason, C. A. Bolme, E. Galtier, H. J. Lee, E. Granados, D. H. Dolan, C. T. Seagle, T. Ao, S. Ali, A. Lazicki, D. Swift, P. Celliers, and W. L. Mao

Phys. Rev. Lett. 119, 025701 (2017) - Published 11 July, 2017

Laser pulses can turn liquid water into an exotic type of ice within a few nanoseconds.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Active versus Passive Hard Disks against a Membrane: Mechanical Pressure and Instability

G. Junot, G. Briand, R. Ledesma-Alonso, and O. Dauchot

Phys. Rev. Lett. 119, 028002 (2017) - Published 12 July, 2017

Experiments show that, unlike an ideal gas, an active-matter system comprised of self-propelled disks does not have a well-defined mechanical pressure.

FEATURED IN PHYSICS

Detecting Patchy Reionization in the Cosmic Microwave Background

Kendrick M. Smith and Simone Ferraro

Phys. Rev. Lett. 119, 021301 (2017) - Published 12 July, 2017

A new method of analyzing cosmic microwave background data could isolate signatures from the so-called reionization period that occurred a few hundred million years after the big bang.

FEATURED IN PHYSICS

Role of Correlations in the Collective Behavior of Microswimmer Suspensions

Joakim Stenhammar, Cesare Nardini, Rupert W. Nash, Davide Marenduzzo, and Alexander Morozov

Phys. Rev. Lett. 119, 028005 (2017) - Published 13 July, 2017

Simulations and theory indicate that the “synchronized swimming” of bacteria occurs in much sparser suspensions of the microorganisms than expected.

EDITORS' SUGGESTION

No-Hypersignaling Principle

Michele Dall’Arno, Sarah Brandsen, Alessandro Tosini, Francesco Buscemi, and Vlatko Vedral

Phys. Rev. Lett. 119, 020401 (2017) - Published 14 July, 2017

In classical and quantum theories, there is a constraint on how much timelike information can be conveyed. New theoretical work predicts that the input-output correlations attainable when transmitting two elementary systems cannot depend on whether the systems are transmitted in series or in parallel.

EDITORS' SUGGESTION

Topological Quantum Optics in Two-Dimensional Atomic Arrays

J. Perczel, J. Borregaard, D. E. Chang, H. Pichler, S. F. Yelin, P. Zoller, and M. D. Lukin

Phys. Rev. Lett. 119, 023603 (2017) - Published 14 July, 2017

A proposed platform for studying topological effects in quantum optical systems involves 2D atomic emitter arrays in optical lattices.

EDITORS' SUGGESTION

Scaling Analysis of the Screening Length in Concentrated Electrolytes

Alpha A. Lee, Carla S. Perez-Martinez, Alexander M. Smith, and Susan Perkin

Phys. Rev. Lett. 119, 026002 (2017) - Published 14 July, 2017

Experiments and theory indicate that the interaction between ions in a concentrated salt solution acts over longer distances that previously thought.

EDITORS' SUGGESTION

Type-II Symmetry-Protected Topological Dirac Semimetals

Tay-Rong Chang, Su-Yang Xu, Daniel S. Sanchez, Wei-Feng Tsai, Shin-Ming Huang, Guoqing Chang, Chuang-Han Hsu, Guang Bian, Ilya Belopolski, Zhi-Ming Yu, Shengyuan A. Yang, Titus Neupert, Horng-Tay Jeng, Hsin Lin, and M. Zahid Hasan

Phys. Rev. Lett. 119, 026404 (2017) - Published 14 July, 2017

A three-dimensional type-II Dirac fermion, analogous to 3D type-II Weyl fermions, is predicted and identified in a family of transition metal compounds.

LETTERS

General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

EDITORS' SUGGESTION

No-Hypersignaling Principle

Michele Dall’Arno, Sarah Brandsen, Alessandro Tosini, Francesco Buscemi, and Vlatko Vedral

Phys. Rev. Lett. 119, 020401 (2017) - Published 14 July, 2017

Towards Holography via Quantum Source-Channel Codes

Fernando Pastawski, Jens Eisert, and Henrik Wilming

Phys. Rev. Lett. 119, 020501 (2017) - Published 14 July, 2017

Entanglement Entropy of Eigenstates of Quadratic Fermionic Hamiltonians

Lev Vidmar, Lucas Hackl, Eugenio Bianchi, and Marcos Rigol

Phys. Rev. Lett. 119, 020601 (2017) - Published 11 July, 2017

Microscopic Origin of Ideal Conductivity in Integrable Quantum Models

Enej Ilievski and Jacopo De Nardis

Phys. Rev. Lett. 119, 020602 (2017) - Published 11 July, 2017

Gravitation and Astrophysics

Searching for the QCD Axion with Gravitational Microlensing

Malcolm Fairbairn, David J. E. Marsh, and Jérémie Quevillon

Phys. Rev. Lett. 119, 021101 (2017) - Published 11 July, 2017

$γ$ -ray Constraints on Decaying Dark Matter and Implications for IceCube

Timothy Cohen, Kohta Murase, Nicholas L. Rodd, Benjamin R. Safdi, and Yotam Soreq

Phys. Rev. Lett. 119, 021102 (2017) - Published 13 July, 2017

Novel Cosmic-Ray Electron and Positron Constraints on MeV Dark Matter Particles

Mathieu Boudaud, Julien Lavalle, and Pierre Salati

Phys. Rev. Lett. 119, 021103 (2017) - Published 13 July, 2017

FEATURED IN PHYSICS

Detecting Patchy Reionization in the Cosmic Microwave Background

Kendrick M. Smith and Simone Ferraro

Phys. Rev. Lett. 119, 021301 (2017) - Published 12 July, 2017

A new method of analyzing cosmic microwave background data could isolate signatures from the so-called reionization period that occurred a few hundred million years after the big bang.

Elementary Particles and Fields

Beam-Recoil Polarization Measurement of $π^{0}$ Electroproduction on the Proton in the Region of the Roper Resonance

S. Štajner et al. (A1 Collaboration)

Phys. Rev. Lett. 119, 022001 (2017) - Published 13 July, 2017

Atomic, Molecular, and Optical Physics

Continuous Symmetry Breaking in 1D Long-Range Interacting Quantum Systems

Mohammad F. Maghrebi, Zhe-Xuan Gong, and Alexey V. Gorshkov

Phys. Rev. Lett. 119, 023001 (2017) - Published 11 July, 2017

Observation of Excited Quadrupole-Bound States in Cold Anions

Guo-Zhu Zhu, Yuan Liu, and Lai-Sheng Wang

Phys. Rev. Lett. 119, 023002 (2017) - Published 11 July, 2017

Experimental Evidence for Quantum Tunneling Time

Nicolas Camus, Enderalp Yakaboylu, Lutz Fechner, Michael Klaiber, Martin Laux, Yonghao Mi, Karen Z. Hatsagortsyan, Thomas Pfeifer, Christoph H. Keitel, and Robert Moshammer

Phys. Rev. Lett. 119, 023201 (2017) - Published 14 July, 2017

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Radiative Rotational Lifetimes and State-Resolved Relative Detachment Cross Sections from Photodetachment Thermometry of Molecular Anions in a Cryogenic Storage Ring

C. Meyer et al.

Phys. Rev. Lett. 119, 023202 (2017) - Published 14 July, 2017

A beam of molecules is cooled through radiative rotation using a cryogenic storage ring without buffer gas, enabling natural lifetime measurements of lowest rotational levels in the molecules.

Pulsed Entanglement of Two Optomechanical Oscillators and Furry’s Hypothesis

S. Kiesewetter, R. Y. Teh, P. D. Drummond, and M. D. Reid

Phys. Rev. Lett. 119, 023601 (2017) - Published 13 July, 2017

Nonclassical Photon Number Distribution in a Superconducting Cavity under a Squeezed Drive

S. Kono, Y. Masuyama, T. Ishikawa, Y. Tabuchi, R. Yamazaki, K. Usami, K. Koshino, and Y. Nakamura

Phys. Rev. Lett. 119, 023602 (2017) - Published 13 July, 2017

EDITORS' SUGGESTION

Topological Quantum Optics in Two-Dimensional Atomic Arrays

J. Perczel, J. Borregaard, D. E. Chang, H. Pichler, S. F. Yelin, P. Zoller, and M. D. Lukin

Phys. Rev. Lett. 119, 023603 (2017) - Published 14 July, 2017

A proposed platform for studying topological effects in quantum optical systems involves 2D atomic emitter arrays in optical lattices.

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

Interrogating Nanojunctions Using Ultraconfined Acoustoplasmonic Coupling

William M. Deacon, Anna Lombardi, Felix Benz, Yago del Valle-Inclan Redondo, Rohit Chikkaraddy, Bart de Nijs, Marie-Elena Kleemann, Jan Mertens, and Jeremy J. Baumberg

Phys. Rev. Lett. 119, 023901 (2017) - Published 12 July, 2017

Observation of Self-Cavitating Envelope Dispersive Shock Waves in Yttrium Iron Garnet Thin Films

P. A. Praveen Janantha, Patrick Sprenger, Mark A. Hoefer, and Mingzhong Wu

Phys. Rev. Lett. 119, 024101 (2017) - Published 14 July, 2017

Demonstrating an In Situ Topological Band Transition in Cylindrical Granular Chains

R. Chaunsali, E. Kim, A. Thakkar, P. G. Kevrekidis, and J. Yang

Phys. Rev. Lett. 119, 024301 (2017) - Published 14 July, 2017

Plasma and Beam Physics

Observation of Quasichanneling Oscillations

T. N. Wistisen, R. E. Mikkelsen, U. I. Uggerhøj, U. Wienands, T. W. Markiewicz, S. Gessner, M. J. Hogan, R. J. Noble, R. Holtzapple, S. Tucker, V. Guidi, A. Mazzolari, E. Bagli, L. Bandiera, and A. Sytov (SLAC E-212 Collaboration)

Phys. Rev. Lett. 119, 024801 (2017) - Published 13 July, 2017

Generation and Evolution of High-Mach-Number Laser-Driven Magnetized Collisionless Shocks in the Laboratory

D. B. Schaeffer, W. Fox, D. Haberberger, G. Fiksel, A. Bhattacharjee, D. H. Barnak, S. X. Hu, and K. Germaschewski

Phys. Rev. Lett. 119, 025001 (2017) - Published 13 July, 2017

Instability of Agyrotropic Electron Beams near the Electron Diffusion Region

D. B. Graham, Yu. V. Khotyaintsev, A. Vaivads, C. Norgren, M. André, J. M. Webster, J. L. Burch, P.-A. Lindqvist, R. E. Ergun, R. B. Torbert, W. R. Paterson, D. J. Gershman, B. L. Giles, W. Magnes, and C. T. Russell

Phys. Rev. Lett. 119, 025101 (2017) - Published 13 July, 2017

Condensed Matter: Structure, etc.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Compression Freezing Kinetics of Water to Ice VII

A. E. Gleason, C. A. Bolme, E. Galtier, H. J. Lee, E. Granados, D. H. Dolan, C. T. Seagle, T. Ao, S. Ali, A. Lazicki, D. Swift, P. Celliers, and W. L. Mao

Phys. Rev. Lett. 119, 025701 (2017) - Published 11 July, 2017

Laser pulses can turn liquid water into an exotic type of ice within a few nanoseconds.

Glass Transition Temperature and Density Scaling in Cumene at Very High Pressure

T. C. Ransom and W. F. Oliver

Phys. Rev. Lett. 119, 025702 (2017) - Published 14 July, 2017

Reversible Bulk Oxidation of Ni Foil During Oscillatory Catalytic Oxidation of Propane: A Novel Type of Spatiotemporal Self-Organization

V. V. Kaichev, A. A. Saraev, A. Yu. Gladky, I. P. Prosvirin, R. Blume, D. Teschner, M. Hävecker, A. Knop-Gericke, R. Schlögl, and V. I. Bukhtiyarov

Phys. Rev. Lett. 119, 026001 (2017) - Published 13 July, 2017

EDITORS' SUGGESTION

Scaling Analysis of the Screening Length in Concentrated Electrolytes

Alpha A. Lee, Carla S. Perez-Martinez, Alexander M. Smith, and Susan Perkin

Phys. Rev. Lett. 119, 026002 (2017) - Published 14 July, 2017

Experiments and theory indicate that the interaction between ions in a concentrated salt solution acts over longer distances that previously thought.

Condensed Matter: Electronic Properties, etc.

Bright-Exciton Fine-Structure Splittings in Single Perovskite Nanocrystals

Chunyang Yin, Liyang Chen, Nan Song, Yan Lv, Fengrui Hu, Chun Sun, William W. Yu, Chunfeng Zhang, Xiaoyong Wang, Yu Zhang, and Min Xiao

Phys. Rev. Lett. 119, 026401 (2017) - Published 11 July, 2017

Quantum Anomalous Hall State in Ferromagnetic ${SrRuO}_{3}$ (111) Bilayers

Liang Si, Oleg Janson, Gang Li, Zhicheng Zhong, Zhaoliang Liao, Gertjan Koster, and Karsten Held

Phys. Rev. Lett. 119, 026402 (2017) - Published 13 July, 2017

Three-Dimensional Electronic Structure of the Type-II Weyl Semimetal ${WTe}_{2}$

Domenico Di Sante, Pranab Kumar Das, C. Bigi, Z. Ergönenc, N. Gürtler, J. A. Krieger, T. Schmitt, M. N. Ali, G. Rossi, R. Thomale, C. Franchini, S. Picozzi, J. Fujii, V. N. Strocov, G. Sangiovanni, I. Vobornik, R. J. Cava, and G. Panaccione

Phys. Rev. Lett. 119, 026403 (2017) - Published 14 July, 2017

EDITORS' SUGGESTION

Type-II Symmetry-Protected Topological Dirac Semimetals

Phys. Rev. Lett. 119, 026404 (2017) - Published 14 July, 2017

A three-dimensional type-II Dirac fermion, analogous to 3D type-II Weyl fermions, is predicted and identified in a family of transition metal compounds.

Landau Level Mixing and the Ground State of the $ν = 5 / 2$ Quantum Hall Effect

Edward H. Rezayi

Phys. Rev. Lett. 119, 026801 (2017) - Published 14 July, 2017

Out-of-Time-Ordered Density Correlators in Luttinger Liquids

Balázs Dóra and Roderich Moessner

Phys. Rev. Lett. 119, 026802 (2017) - Published 14 July, 2017

Multipole Superconductivity in Nonsymmorphic ${Sr}_{2} {IrO}_{4}$

Shuntaro Sumita, Takuya Nomoto, and Youichi Yanase

Phys. Rev. Lett. 119, 027001 (2017) - Published 14 July, 2017

Understanding the Giant Enhancement of Exchange Interaction in ${Bi}_{2} {Se}_{3} − EuS$ Heterostructures

Jeongwoo Kim, Kyoung-Whan Kim, Hui Wang, Jairo Sinova, and Ruqian Wu

Phys. Rev. Lett. 119, 027201 (2017) - Published 13 July, 2017

Dzyaloshinskii-Moriya Interaction across an Antiferromagnet-Ferromagnet Interface

Xin Ma, Guoqiang Yu, Seyed A. Razavi, Stephen S. Sasaki, Xiang Li, Kai Hao, Sarah H. Tolbert, Kang L. Wang, and Xiaoqin Li

Phys. Rev. Lett. 119, 027202 (2017) - Published 14 July, 2017

Dispersive Stiffness of Dzyaloshinskii Domain Walls

J. P. Pellegren, D. Lau, and V. Sokalski

Phys. Rev. Lett. 119, 027203 (2017) - Published 14 July, 2017

Two-Dimensional $J_{eff} = 1 / 2$ Antiferromagnetic Insulator Unraveled from Interlayer Exchange Coupling in Artificial Perovskite Iridate Superlattices

Lin Hao, D. Meyers, Clayton Frederick, Gilberto Fabbris, Junyi Yang, Nathan Traynor, Lukas Horak, Dominik Kriegner, Yongseong Choi, Jong-Woo Kim, Daniel Haskel, Phil J. Ryan, M. P. M. Dean, and Jian Liu

Phys. Rev. Lett. 119, 027204 (2017) - Published 14 July, 2017

Experimental Verification of the Very Strong Coupling Regime in a GaAs Quantum Well Microcavity

S. Brodbeck, S. De Liberato, M. Amthor, M. Klaas, M. Kamp, L. Worschech, C. Schneider, and S. Höfling

Phys. Rev. Lett. 119, 027401 (2017) - Published 12 July, 2017

First-Principles Vibrational Electron Energy Loss Spectroscopy of $β$ -Guanine

G. Radtke, D. Taverna, M. Lazzeri, and E. Balan

Phys. Rev. Lett. 119, 027402 (2017) - Published 13 July, 2017

Control of Coherently Coupled Exciton Polaritons in Monolayer Tungsten Disulphide

Xiaoze Liu, Wei Bao, Quanwei Li, Chad Ropp, Yuan Wang, and Xiang Zhang

Phys. Rev. Lett. 119, 027403 (2017) - Published 14 July, 2017

Thermal Transport Signatures of Broken-Symmetry Phases in Graphene

Falko Pientka, Jonah Waissman, Philip Kim, and Bertrand I. Halperin

Phys. Rev. Lett. 119, 027601 (2017) - Published 14 July, 2017

Exact Nonequilibrium Transport in the Topological Kondo Effect

B. Béri

Phys. Rev. Lett. 119, 027701 (2017) - Published 14 July, 2017

Polymer, Soft Matter, Biological, Climate, and Interdisciplinary Physics

Self-Assembly of Colloidal Molecules due to Self-Generated Flow

Ran Niu (牛冉), Thomas Palberg, and Thomas Speck

Phys. Rev. Lett. 119, 028001 (2017) - Published 11 July, 2017

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Active versus Passive Hard Disks against a Membrane: Mechanical Pressure and Instability

G. Junot, G. Briand, R. Ledesma-Alonso, and O. Dauchot

Phys. Rev. Lett. 119, 028002 (2017) - Published 12 July, 2017

Experiments show that, unlike an ideal gas, an active-matter system comprised of self-propelled disks does not have a well-defined mechanical pressure.