Author(s): Prasanth Prabhakaran, Stephan Weiss, Alexei Krekhov, Alain Pumir, and Eberhard BodenschatzExperiments with a simplified version of the atmosphere show that falling drops seed many smaller droplets in their wake.[Phys. Rev. Lett. 119, 128701]…

## Low-Field-Triggered Large Magnetostriction in Iron-Palladium Strain Glass Alloys

Author(s): Shuai Ren, Dezhen Xue, Yuanchao Ji, Xiaolian Liu, Sen Yang, and Xiaobing RenFePd alloys exhibit a large magnetostriction at low fields, which can eventually lead to smaller magnetomechanical devices.[Phys. Rev. Lett. 119, 125701] Published F…

## Generalized Magnetic Mirrors

Author(s): Wei LiuMagnetic fields could be reflected in metamaterials using a mirror created from electrical resonances, rather than the normally used magnetic resonances.[Phys. Rev. Lett. 119, 123902] Published Thu Sep 21, 2017

## Spontaneous Formation of Vector Vortex Beams in Vertical-Cavity Surface-Emitting Lasers with Feedback

Author(s): Jesus Jimenez-Garcia, Pedro Rodriguez, T. Guillet, and T. AckemannA simple laser setup has spontaneously produced nonuniform polarization patterns called vector vortices.[Phys. Rev. Lett. 119, 113902] Published Fri Sep 15, 2017

## Emergence of Type-II Dirac Points in Graphynelike Photonic Lattices

Author(s): Georgios G. Pyrialakos, Nicholas S. Nye, Nikolaos V. Kantartzis, and Demetrios N. ChristodoulidesThe band structure of an all-dielectric, non-centrosymmetric photonic lattice is predicted to exhibit both type-I and type-II Dirac points.[Phys…

## Temperature Scaling Law for Quantum Annealing Optimizers

Author(s): Tameem Albash, Victor Martin-Mayor, and Itay Hen

Calculations show that quantum annealing—the quantum computing method used in a commercially available device—is hampered by thermal effects.

[Phys. Rev. Lett. 119, 110502] Published Thu Sep 14, 2017

## Self-Interacting Dark Matter Can Explain Diverse Galactic Rotation Curves

Author(s): Ayuki Kamada, Manoj Kaplinghat, Andrew B. Pace, and Hai-Bo Yu

Dark matter that interacts with itself provides a better description of the speeds of stars in galaxies than dark matter that doesn’t self-interact.

[Phys. Rev. Lett. 119, 111102] Published Wed Sep 13, 2017

## Improved Noninterferometric Test of Collapse Models Using Ultracold Cantilevers

Author(s): A. Vinante, R. Mezzena, P. Falferi, M. Carlesso, and A. BassiOscillations of a microcantilever at milliKelvin temperature have been accurately measured, leading to more stringent limits on the collapse parameters of wave functions and reveal…

## All Entangled States can Demonstrate Nonclassical Teleportation

Author(s): Daniel Cavalcanti, Paul Skrzypczyk, and Ivan Šupić

A new benchmark for quantum teleportation shows that more entangled states are viable for this that previously thought.

[Phys. Rev. Lett. 119, 110501] Published Tue Sep 12, 2017

## Observation of the Doubly Charmed Baryon ${\mathrm{Ξ}}_{cc}^{++}$

Author(s): R. Aaij et al. (LHCb Collaboration)High-precision experiments at CERN find a new baryon containing two charm quarks.[Phys. Rev. Lett. 119, 112001] Published Mon Sep 11, 2017

## QCD Coupling from a Nonperturbative Determination of the Three-Flavor $\mathrm{Λ}$ Parameter

Author(s): Mattia Bruno, Mattia Dalla Brida, Patrick Fritzsch, Tomasz Korzec, Alberto Ramos, Stefan Schaefer, Hubert Simma, Stefan Sint, and Rainer Sommer (ALPHA Collaboration)The magnitude of the strong nuclear force is precisely predicted with lattic…

## Negative Longitudinal Magnetoresistance from the Anomalous $N=0$ Landau Level in Topological Materials

Author(s): B. A. Assaf, T. Phuphachong, E. Kampert, V. V. Volobuev, P. S. Mandal, J. Sánchez-Barriga, O. Rader, G. Bauer, G. Springholz, L. A. de Vaulchier, and Y. Guldner

Analysis of the magnetoresistance of topological insulators indicates that the bulk of these materials is more topologically interesting than previously thought.

[Phys. Rev. Lett. 119, 106602] Published Fri Sep 08, 2017

## Superpropulsion of Droplets and Soft Elastic Solids

Author(s): Christophe Raufaste, Gabriela Ramos Chagas, Thierry Darmanin, Cyrille Claudet, Frédéric Guittard, and Franck Celestini

An oscillating surface can propel a drop of water or a springy ball upward at a speed higher than that of the moving surface.

[Phys. Rev. Lett. 119, 108001] Published Fri Sep 08, 2017

## Effects of Trimethylamine-$N$-oxide on the Conformation of Peptides and its Implications for Proteins

Author(s): Zhaoqian Su, Farbod Mahmoudinobar, and Cristiano L. DiasThe stabilization of folded proteins via the osmolyte TMAO is studied theoretically using molecular dynamics simulations, providing new insights in to the molecular mechanisms behind th…

## Hydrogen Clathrate Structures in Rare Earth Hydrides at High Pressures: Possible Route to Room-Temperature Superconductivity

Author(s): Feng Peng, Ying Sun, Chris J. Pickard, Richard J. Needs, Qiang Wu, and Yanming MaA first-principles search among possible rare earth hydrogen clathrate structures under high pressure predicts that one of them, YH10, is a potential room-tempe…

## Interatomic Coulombic Decay: The Mechanism for Rapid Deexcitation of Hollow Atoms

Author(s): Richard A. Wilhelm, Elisabeth Gruber, Janine Schwestka, Roland Kozubek, Teresa I. Madeira, José P. Marques, Jacek Kobus, Arkady V. Krasheninnikov, Marika Schleberger, and Friedrich Aumayr

Interatomic Coulomb decay is shown to cause the ultrafast neutralization and de-excitation of atoms after they impact a surface.

[Phys. Rev. Lett. 119, 103401] Published Fri Sep 08, 2017

## Competition between Polar and Nonpolar Lattice Distortions in Oxide Quantum Wells: New Critical Thickness at Polar Interfaces

Author(s): J. Gazquez, M. Stengel, R. Mishra, M. Scigaj, M. Varela, M. A. Roldan, J. Fontcuberta, F. Sánchez, and G. Herranz

The balance between two competing order parameters can be controlled by quantum confinement to stabilize a perovskite compound into one of two possible phases.

[Phys. Rev. Lett. 119, 106102] Published Thu Sep 07, 2017

## Spectroscopy of a Synthetic Trapped Ion Qubit

Author(s): David Hucul, Justin E. Christensen, Eric R. Hudson, and Wesley C. CampbellThe trapping and cooling of the radioactive isotope barium-133 offers up an attractive system for encoding quantum information.[Phys. Rev. Lett. 119, 100501] Published…

## Radio Frequency Magneto-Optical Trapping of CaF with High Density

Author(s): Loïc Anderegg, Benjamin L. Augenbraun, Eunmi Chae, Boerge Hemmerling, Nicholas R. Hutzler, Aakash Ravi, Alejandra Collopy, Jun Ye, Wolfgang Ketterle, and John M. Doyle

Significant improvements in molecular trapping techniques increase the trappable molecular density by an order of magnitude, furthering the quest for directly loading optical tweezers and lattices, and for generating a Bose-Einstein condensate of CaF.

[Phys. Rev. Lett. 119, 103201] Published Wed Sep 06, 2017

## Mean-Field Scaling of the Superfluid to Mott Insulator Transition in a 2D Optical Superlattice

Author(s): Claire K. Thomas, Thomas H. Barter, Tsz-Him Leung, Masayuki Okano, Gyu-Boong Jo, Jennie Guzman, Itamar Kimchi, Ashvin Vishwanath, and Dan M. Stamper-KurnPrecise, quantitative tests of many-body theory are carried out using ultracold atoms as…

## Thermometer Effect: Origin of the Mixed Alkali Effect in Glass Relaxation

Author(s): Yingtian Yu, Mengyi Wang, Morten M. Smedskjaer, John C. Mauro, Gaurav Sant, and Mathieu BauchyLoss of calibration of alkali glass thermometers is due to changes in the oxygen coordination numbers of the different types of alkali atoms.[Phys….

## Birefringent Stable Glass with Predominantly Isotropic Molecular Orientation

Author(s): Tianyi Liu, Annemarie L. Exarhos, Ethan C. Alguire, Feng Gao, Elmira Salami-Ranjbaran, Kevin Cheng, Tiezheng Jia, Joseph E. Subotnik, Patrick J. Walsh, James M. Kikkawa, and Zahra FakhraaiBirefringence in a stable glass is shown, through pho…

## Magneto-Optical Detection of the Spin Hall Effect in Pt and W Thin Films

Author(s): C. Stamm, C. Murer, M. Berritta, J. Feng, M. Gabureac, P. M. Oppeneer, and P. Gambardella

Spin accumulation due to the spin Hall effect has, for the first time, been detected directly, rather than inferred indirectly, in nonmagnetic conductors.

[Phys. Rev. Lett. 119, 087203] Published Fri Aug 25, 2017

## Popsicle-Stick Cobra Wave

Author(s): Jean-Philippe Boucher, Christophe Clanet, David Quéré, and Frédéric Chevy

High-speed video of the dramatic “cobra wave” produced by a latticework of popsicle sticks helped researchers explain the shape and speed of the wave.

[Phys. Rev. Lett. 119, 084301] Published Fri Aug 25, 2017

## Study of Jet Quenching with $Z+\text{jet}$ Correlations in Pb-Pb and $pp$ Collisions at ${\sqrt{s}}_{NN}=5.02\text{ }\text{ }\mathrm{TeV}$

Author(s): A. M. Sirunyan *et al.* (CMS Collaboration)

Properties of the quark-gluon plasma can be inferred from measurements of jets and Z bosons simultaneously produced in the ion collisions that create the plasma.

[Phys. Rev. Lett. 119, 082301] Published Wed Aug 23, 2017

## Direct Observation of Dynamical Quantum Phase Transitions in an Interacting Many-Body System

Author(s): P. Jurcevic, H. Shen, P. Hauke, C. Maier, T. Brydges, C. Hempel, B. P. Lanyon, M. Heyl, R. Blatt, and C. F. Roos

The observation of dynamical quantum phase transitions in an interacting many-body system breaks new ground in the study of matter out of thermal equilibrium.

[Phys. Rev. Lett. 119, 080501] Published Mon Aug 21, 2017

## Full-Gap Superconductivity Robust against Disorder in Heavy-Fermion ${\mathrm{CeCu}}_{2}{\mathrm{Si}}_{2}$

Author(s): T. Takenaka, Y. Mizukami, J. A. Wilcox, M. Konczykowski, S. Seiro, C. Geibel, Y. Tokiwa, Y. Kasahara, C. Putzke, Y. Matsuda, A. Carrington, and T. Shibauchi

Magnetic penetration depth measurements show that the superconducting gap in this iconic heavy-fermion superconductor is robust against the introduction of disorder, ruling out some superconductivity mechanisms as explanations.

[Phys. Rev. Lett. 119, 077001] Published Fri Aug 18, 2017

## Spin Current Generation Using a Surface Acoustic Wave Generated via Spin-Rotation Coupling

Author(s): D. Kobayashi, T. Yoshikawa, M. Matsuo, R. Iguchi, S. Maekawa, E. Saitoh, and Y. NozakiWe demonstrate the generation of alternating spin current (SC) via spin-rotation coupling (SRC) using a surface acoustic wave (SAW) in a Cu film. Ferromagn…

## Determination of the Spin and Parity of the ${Z}_{c}(3900)$

Author(s): M. Ablikim et al. (BESIII Collaboration)An analysis of electron-positron collision data has determined the spin and parity of a particle thought to consist of four quarks.[Phys. Rev. Lett. 119, 072001] Published Wed Aug 16, 2017

## Melting and High $P\text{−}T$ Transitions of Hydrogen up to 300 GPa

Author(s): Chang-sheng Zha, Hanyu Liu, John S. Tse, and Russell J. HemleyMeasurements of the melting curve of hydrogen at unprecedentedly high pressures call for a refinement of the theories describing the material.[Phys. Rev. Lett. 119, 075302] Publis…

## Thermal Conductance of a Single-Electron Transistor

Author(s): B. Dutta, J. T. Peltonen, D. S. Antonenko, M. Meschke, M. A. Skvortsov, B. Kubala, J. König, C. B. Winkelmann, H. Courtois, and J. P. Pekola

A single-electron transistor carries more heat than that predicted by the Wiedemann-Franz law linking thermal and electrical conductivities.

[Phys. Rev. Lett. 119, 077701] Published Tue Aug 15, 2017

## Rotationally Cold ${\mathrm{OH}}^{−}$ Ions in the Cryogenic Electrostatic Ion-Beam Storage Ring DESIREE

Author(s): H. T. Schmidt, G. Eklund, K. C. Chartkunchand, E. K. Anderson, M. Kamińska, N. de Ruette, R. D. Thomas, M. K. Kristiansson, M. Gatchell, P. Reinhed, S. Rosén, A. Simonsson, A. Källberg, P. Löfgren, S. Mannervik, H. Zettergren, and H. Cederquist

Two research teams have created the coldest molecular beams ever, putting molecules in their ground states of rotation and providing improved experimental stand-ins for interstellar gas clouds.

[Phys. Rev. Lett. 119, 073001] Published Mon Aug 14, 2017

## Stress Transmission and Failure in Disordered Porous Media

Author(s): Hadrien Laubie, Farhang Radjai, Roland Pellenq, and Franz-Josef Ulm

Simulations of porous materials exhibit internal stress patterns like those in granular materials, despite the fact that these two systems are practically “negative images” of each other.

[Phys. Rev. Lett. 119, 075501] Published Mon Aug 14, 2017

## Metagratings: Beyond the Limits of Graded Metasurfaces for Wave Front Control

Author(s): Younes Ra’di, Dimitrios L. Sounas, and Andrea Alù

Light could be steered in any direction using specially designed periodic gratings that have metamaterial inclusions, according to predictions.

[Phys. Rev. Lett. 119, 067404] Published Thu Aug 10, 2017

## Proton-Proton Fusion and Tritium $β$ Decay from Lattice Quantum Chromodynamics

Author(s): Martin J. Savage, Phiala E. Shanahan, Brian C. Tiburzi, Michael L. Wagman, Frank Winter, Silas R. Beane, Emmanuel Chang, Zohreh Davoudi, William Detmold, and Kostas Orginos (NPLQCD Collaboration)

A quark-based model called lattice QCD provides theoretical predictions for two weak-force-driven reactions—proton fusion and tritium decay.

[Phys. Rev. Lett. 119, 062002] Published Thu Aug 10, 2017

## Dijet imbalance measurements in $\mathrm{Au}+\mathrm{Au}$ and $pp$ collisions at $\sqrt{{s}_{NN}}=200\text{ }\text{ }\mathrm{GeV}$ at STAR

Author(s): L. Adamczyk et al. (STAR Collaboration)Analysis of the energy imbalance of dijet pairs in Au-Au collisions at RHIC shows how jets lose energy as they propagate through a quark-gluon plasma.[Phys. Rev. Lett. 119, 062301] Published Thu Aug 10,…

## Femtosecond Probing of Plasma Wakefields and Observation of the Plasma Wake Reversal Using a Relativistic Electron Bunch

Author(s): C. J. Zhang, J. F. Hua, Y. Wan, C.-H. Pai, B. Guo, J. Zhang, Y. Ma, F. Li, Y. P. Wu, H.-H. Chu, Y. Q. Gu, X. L. Xu, W. B. Mori, C. Joshi, J. Wang, and W. Lu

The electric-field structure in plasma wakefield accelerators has been detected experimentally with femtosecond resolution for the first time.

[Phys. Rev. Lett. 119, 064801] Published Wed Aug 09, 2017

## Nanosecond X-Ray Photon Correlation Spectroscopy on Magnetic Skyrmions

Author(s): M. H. Seaberg, B. Holladay, J. C. T. Lee, M. Sikorski, A. H. Reid, S. A. Montoya, G. L. Dakovski, J. D. Koralek, G. Coslovich, S. Moeller, W. F. Schlotter, R. Streubel, S. D. Kevan, P. Fischer, E. E. Fullerton, J. L. Turner, F.-J. Decker, S. K. Sinha, S. Roy, and J. J. Turner

A new x-ray spectroscopy technique can measure magnetic fluctuations in vortex-like structures called Skyrmions with nanosecond resolution.

[Phys. Rev. Lett. 119, 067403] Published Wed Aug 09, 2017

## Probing Electron Spin Resonance in Monolayer Graphene

Author(s): T. J. Lyon, J. Sichau, A. Dorn, A. Centeno, A. Pesquera, A. Zurutuza, and R. H. Blick

Electron spin resonance experiments demonstrate that graphene possesses an intrinsic spin-orbit coupling.

[Phys. Rev. Lett. 119, 066802] Published Tue Aug 08, 2017

## Fourth Exception in the Calculation of Relic Abundances

Author(s): Raffaele Tito D’Agnolo, Duccio Pappadopulo, and Joshua T. Ruderman

A proposal for a new mechanism of dark matter production suggests that the abundance of dark matter may be set by its inelastic scattering rate, instead of its annihilation rate.

[Phys. Rev. Lett. 119, 061102] Published Tue Aug 08, 2017

## Conductance of a Freestanding Conjugated Molecular Wire

Author(s): Torben Jasper-Tönnies, Aran Garcia-Lekue, Thomas Frederiksen, Sandra Ulrich, Rainer Herges, and Richard Berndt

The conductance of a molecule standing perpendicular to a substrate is found to be dependent on the geometry, orbital symmetries, and bonds of the molecule.

[Phys. Rev. Lett. 119, 066801] Published Mon Aug 07, 2017

## Primordial Black Holes and $r$-Process Nucleosynthesis

Author(s): George M. Fuller, Alexander Kusenko, and Volodymyr Takhistov

A dramatic scenario in which a compact black hole eats a spinning neutron star from inside might explain a nearby galaxy’s unexpectedly high abundance of heavy elements.

[Phys. Rev. Lett. 119, 061101] Published Mon Aug 07, 2017

## Nonlinear Self-Action of Light through Biological Suspensions

Author(s): Anna Bezryadina, Tobias Hansson, Rekha Gautam, Benjamin Wetzel, Graham Siggins, Andrew Kalmbach, Josh Lamstein, Daniel Gallardo, Edward J. Carpenter, Andrew Ichimura, Roberto Morandotti, and Zhigang ChenA laser beam sent through a suspension…

## Oscillation of Branching Ratios Between the $\mathrm{D}(2s)+\mathrm{D}(1s)$ and the $\mathrm{D}(2p)+\mathrm{D}(1s)$ Channels in Direct Photodissociation of ${\mathrm{D}}_{2}$

Author(s): Jie Wang, Qingnan Meng, and Yuxiang MoPreviously predicted oscillations in the electronic states of atoms after the dissociation of a hydrogen molecule are observed experimentally.[Phys. Rev. Lett. 119, 053002] Published Fri Aug 04, 2017

## Search for the Dimuon Decay of the Higgs Boson in $pp$ Collisions at $\sqrt{s}=13\text{ }\text{ }\mathrm{TeV}$ with the ATLAS Detector

Author(s): M. Aaboud et al. (ATLAS Collaboration)The ATLAS collaboration has placed an upper limit on the decay rate of Higgs bosons into pairs of muons within a factor of three of the Standard Model prediction.[Phys. Rev. Lett. 119, 051802] Published …

## Pressure-Dependent Friction on Granular Slopes Close to Avalanche

Author(s): Jérôme Crassous, Antoine Humeau, Samuel Boury, and Jérôme Casas

Experiments show that the mass of an object determines whether it slides down a sandy slope, which may explain why ants get trapped in antlions’ traps.

[Phys. Rev. Lett. 119, 058003] Published Thu Aug 03, 2017

## Frictional Magneto-Coulomb Drag in Graphene Double-Layer Heterostructures

Author(s): Xiaomeng Liu, Lei Wang, Kin Chung Fong, Yuanda Gao, Patrick Maher, Kenji Watanabe, Takashi Taniguchi, James Hone, Cory Dean, and Philip KimThe first experimental study of frictional drag effect between two monolayer sheets of graphene separa…

## Optical Control of the Resonant Dipole-Dipole Interaction between Rydberg Atoms

Author(s): Sylvain de Léséleuc, Daniel Barredo, Vincent Lienhard, Antoine Browaeys, and Thierry Lahaye

The interaction between two Rydberg atoms is modified experimentally by addressing one of the two atoms with a laser beam.

[Phys. Rev. Lett. 119, 053202] Published Wed Aug 02, 2017

## Designing Kitaev Spin Liquids in Metal-Organic Frameworks

Author(s): Masahiko G. Yamada, Hiroyuki Fujita, and Masaki OshikawaVersatile materials called metal-organic frameworks might be good systems in which to search for quantum spin liquids.[Phys. Rev. Lett. 119, 057202] Published Tue Aug 01, 2017

## Evidence for Weakly Correlated Oxygen Holes in the Highest-T_{c} Cuprate Superconductor HgBa_{2}Ca_{2}Cu_{3}O_{8+δ}

Author(s): A. Chainani, M. Sicot, Y. Fagot-Revurat, G. Vasseur, J. Granet, B. Kierren, L. Moreau, M. Oura, A. Yamamoto, Y. Tokura, and D. Malterre

Oxygen-hole correlations in HgBa2Ca2Cu3O8+δ, the highest Tc mercury-based cuprate superconductor, are found to be weaker than those seen in any other cuprate superconductor.

[Phys. Rev. Lett. 119, 057001] Published Mon Jul 31, 2017

## Mass and Moment of Inertia Govern the Transition in the Dynamics and Wakes of Freely Rising and Falling Cylinders

Author(s): Varghese Mathai, Xiaojue Zhu, Chao Sun, and Detlef LohseThe oscillations of neutrally buoyant cylinders depend on rotational freedom of the objects, as well as their mass.[Phys. Rev. Lett. 119, 054501] Published Mon Jul 31, 2017

## Size-Dependent Localization in Polydisperse Colloidal Glasses

Author(s): D. Heckendorf, K. J. Mutch, S. U. Egelhaaf, and M. Laurati

Imaging of the individual particles of a glass reveals the different behaviors of slightly smaller vs slightly larger particles, suggesting new ways to adjust the properties of commercial glasses.

[Phys. Rev. Lett. 119, 048003] Published Fri Jul 28, 2017

## Superadditivity of the Classical Capacity with Limited Entanglement Assistance

Author(s): Elton Yechao Zhu, Quntao Zhuang, and Peter W. ShorThe capacity of quantum communication channels is predicted to switch from additive to superadditive when entanglement assistance is limited.[Phys. Rev. Lett. 119, 040503] Published Thu Jul 2…

## Excitation and Control of Plasma Wakefields by Multiple Laser Pulses

Author(s): J. Cowley, C. Thornton, C. Arran, R. J. Shalloo, L. Corner, G. Cheung, C. D. Gregory, S. P. D. Mangles, N. H. Matlis, D. R. Symes, R. Walczak, and S. M. Hooker

Trains of laser pulses can be used to accelerate high-repetition-rate electron bunches to high energies.

[Phys. Rev. Lett. 119, 044802] Published Thu Jul 27, 2017

## In-Plane Propagation of Light in Transition Metal Dichalcogenide Monolayers: Optical Selection Rules

Author(s): G. Wang, C. Robert, M. M. Glazov, F. Cadiz, E. Courtade, T. Amand, D. Lagarde, T. Taniguchi, K. Watanabe, B. Urbaszek, and X. Marie

The electric field of light emitted from transition metal dichalcogenide monolayers is found to be oriented perpendicularly to the monolayer plane.

[Phys. Rev. Lett. 119, 047401] Published Wed Jul 26, 2017

## Entanglement-Enhanced Radio-Frequency Field Detection and Waveform Sensing

Author(s): F. Martin Ciurana, G. Colangelo, L. Slodička, R. J. Sewell, and M. W. Mitchell

A new design for an atomic magnetometer utilizes so-called quantum nondemolition measurements to detect very weak magnetic-field signals.

[Phys. Rev. Lett. 119, 043603] Published Tue Jul 25, 2017

## Determinant Diagrammatic Monte Carlo Algorithm in the Thermodynamic Limit

Author(s): Riccardo RossiHigh-order diagrammatic expansions for fermionic systems can be computed by considering the sum of all connected Feynman diagrams at fixed positions of interaction vertices. The method is an improvement over conventional diagra…

## Deconstructing Temperature Gradients across Fluid Interfaces: The Structural Origin of the Thermal Resistance of Liquid-Vapor Interfaces

Author(s): Jordan Muscatello, Enrique Chacón, Pedro Tarazona, and Fernando Bresme

The interfacial structure responsible for thermal resistance across liquid-vapor interfaces is shown to be connected to a low density fluid layer adsorbed at the liquid surface.

[Phys. Rev. Lett. 119, 045901] Published Tue Jul 25, 2017

## Tailoring Correlations of the Local Density of States in Disordered Photonic Materials

Author(s): F. Riboli, F. Uccheddu, G. Monaco, N. Caselli, F. Intonti, M. Gurioli, and S. E. Skipetrov

The frequency correlations of local density of states of a material are linked to its macroscopic features.

[Phys. Rev. Lett. 119, 043902] Published Tue Jul 25, 2017

## Plasma versus Drude Modeling of the Casimir Force: Beyond the Proximity Force Approximation

Author(s): Michael Hartmann, Gert-Ludwig Ingold, and Paulo A. Maia NetoNumerical results for experimentally measurable parameters are presented for the Casimir force between a sphere and a planar surface both made of gold.[Phys. Rev. Lett. 119, 043901]…

## Superradiant Instability and Backreaction of Massive Vector Fields around Kerr Black Holes

Author(s): William E. East and Frans Pretorius

A spinning black hole may lose up to 9% of its mass by spontaneously growing “hair” in the form of excitations of a hypothetical particle field with a tiny mass.

[Phys. Rev. Lett. 119, 041101] Published Mon Jul 24, 2017

## Search for Neutrinoless Quadruple-β Decay of ^{150}Nd with the NEMO-3 Detector

Author(s): R. Arnold et al. (NEMO-3 Collaboration)The NEMO collaboration has performed the first experimental search for the rare neutrinoless quadruple beta decay.[Phys. Rev. Lett. 119, 041801] Published Mon Jul 24, 2017

## Scanning Gate Microscope for Cold Atomic Gases

Author(s): Samuel Häusler, Shuta Nakajima, Martin Lebrat, Dominik Husmann, Sebastian Krinner, Tilman Esslinger, and Jean-Philippe Brantut

A new technique produces an image of the flow of cold atoms through a channel, a potentially important tool for future cold-atom technology.

[Phys. Rev. Lett. 119, 030403] Published Fri Jul 21, 2017

## Attosecond Probing of Nuclear Dynamics with Trajectory-Resolved High-Harmonic Spectroscopy

Author(s): Pengfei Lan, Marc Ruhmann, Lixin He, Chunyang Zhai, Feng Wang, Xiaosong Zhu, Qingbin Zhang, Yueming Zhou, Min Li, Manfred Lein, and Peixiang LuLaser-induced proton dynamics of molecular hydrogen are probed with attosecond precision using a t…

## Streaming from the Equator of a Drop in an External Electric Field

Author(s): Quentin Brosseau and Petia M. VlahovskaAn electric field can pull apart a millimeter-sized oil drop, causing it to shed thin rings from its equator that then break up into tiny droplets.[Phys. Rev. Lett. 119, 034501] Published Thu Jul 20, 2017

## Hippocampal Spike-Timing Correlations Lead to Hexagonal Grid Fields

Author(s): Mauro M. Monsalve-Mercado and Christian Leibold

A model explains why grid cells—neurons that are part of the brain’s positioning system—fire electrical pulses in hexagonal patterns.

[Phys. Rev. Lett. 119, 038101] Published Wed Jul 19, 2017

## Universality of the Peregrine Soliton in the Focusing Dynamics of the Cubic Nonlinear Schrödinger Equation

Author(s): Alexey Tikan, Cyril Billet, Gennady El, Alexander Tovbis, Marco Bertola, Thibaut Sylvestre, Francois Gustave, Stephane Randoux, Goëry Genty, Pierre Suret, and John M. Dudley

The Peregrine soliton, a special kind of soliton whose shape is localized in space and time, exists in a wider range of scenarios than previously thought.

[Phys. Rev. Lett. 119, 033901] Published Tue Jul 18, 2017

## High-Precision Measurement of the Proton’s Atomic Mass

Author(s): F. Heiße, F. Köhler-Langes, S. Rau, J. Hou, S. Junck, A. Kracke, A. Mooser, W. Quint, S. Ulmer, G. Werth, K. Blaum, and S. Sturm

The most precise measurement to date of the proton mass finds a value that is 3 standard deviations lower than previous estimates.

[Phys. Rev. Lett. 119, 033001] Published Tue Jul 18, 2017

## Self-Focusing and the Talbot Effect in Conformal Transformation Optics

Author(s): Xiangyang Wang, Huanyang Chen, Hui Liu, Lin Xu, Chong Sheng, and Shining ZhuTransformation optics is used to design a device that both focuses light and diffracts it.[Phys. Rev. Lett. 119, 033902] Published Tue Jul 18, 2017

## Measuring Interlayer Shear Stress in Bilayer Graphene

Author(s): Guorui Wang, Zhaohe Dai, Yanlei Wang, PingHeng Tan, Luqi Liu, Zhiping Xu, Yueguang Wei, Rui Huang, and Zhong ZhangCreating a bulge in a graphene sheet offers the first measurement of the shear forces between graphene layers, an essential par…

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

Author(s): C. Meyer et al.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.[Phys. Rev. Lett. 119, 023202] Pub…

## No-Hypersignaling Principle

Author(s): Michele Dall’Arno, Sarah Brandsen, Alessandro Tosini, Francesco Buscemi, and Vlatko Vedral

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.

[Phys. Rev. Lett. 119, 020401] Published Fri Jul 14, 2017

## Topological Quantum Optics in Two-Dimensional Atomic Arrays

Author(s): J. Perczel, J. Borregaard, D. E. Chang, H. Pichler, S. F. Yelin, P. Zoller, and M. D. Lukin

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

[Phys. Rev. Lett. 119, 023603] Published Fri Jul 14, 2017

## Type-II Symmetry-Protected Topological Dirac Semimetals

Author(s): 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 HasanA three-dim…

## Scaling Analysis of the Screening Length in Concentrated Electrolytes

Author(s): Alpha A. Lee, Carla S. Perez-Martinez, Alexander M. Smith, and Susan PerkinExperiments and theory indicate that the interaction between ions in a concentrated salt solution acts over longer distances that previously thought.[Phys. Rev. Lett….

## Role of Correlations in the Collective Behavior of Microswimmer Suspensions

Author(s): Joakim Stenhammar, Cesare Nardini, Rupert W. Nash, Davide Marenduzzo, and Alexander Morozov

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

[Phys. Rev. Lett. 119, 028005] Published Thu Jul 13, 2017

## Detecting Patchy Reionization in the Cosmic Microwave Background

Author(s): Kendrick M. Smith and Simone FerraroA 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.[Phys. Rev. Lett. 119…

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

Author(s): G. Junot, G. Briand, R. Ledesma-Alonso, and O. DauchotExperiments show that, unlike an ideal gas, an active-matter system comprised of self-propelled disks does not have a well-defined mechanical pressure.[Phys. Rev. Lett. 119, 028002] Publi…

## Compression Freezing Kinetics of Water to Ice VII

Author(s): 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

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

[Phys. Rev. Lett. 119, 025701] Published Tue Jul 11, 2017

## Observing Dissipative Topological Defects with Coupled Lasers

Author(s): Vishwa Pal, Chene Tradonsky, Ronen Chriki, Asher A. Friesem, and Nir DavidsonA circle of interacting lasers is a new model system for exploring topological defects, disordered structures that show up in a wide variety of seemingly unrelated …

## Tuning Paramagnetic Spin Excitations of Single Adatoms

Author(s): Julen Ibañez-Azpiroz, Manuel dos Santos Dias, Benedikt Schweflinghaus, Stefan Blügel, and Samir Lounis

Theory and simulations show that strongly renormalized spin-flip interactions of nonmagnetic atoms can be measured by inelastic scanning tunneling spectroscopy.

[Phys. Rev. Lett. 119, 017203] Published Fri Jul 07, 2017

## Inferences about Supernova Physics from Gravitational-Wave Measurements: GW151226 Spin Misalignment as an Indicator of Strong Black-Hole Natal Kicks

Author(s): Richard O’Shaughnessy, Davide Gerosa, and Daniel Wysocki

An analysis of data from LIGO’s second gravitational-wave event indicates that a supernova can impart a strong kick to the black hole it creates.

[Phys. Rev. Lett. 119, 011101] Published Thu Jul 06, 2017

## Event-Ready Bell Test Using Entangled Atoms Simultaneously Closing Detection and Locality Loopholes

Author(s): Wenjamin Rosenfeld, Daniel Burchardt, Robert Garthoff, Kai Redeker, Norbert Ortegel, Markus Rau, and Harald WeinfurterRubidium atoms 400 meters apart have been used to demonstrate the first event-ready violation of a Bell inequality, free fr…

## Experimental Realization of Type-II Dirac Fermions in a PdTe_{2} Superconductor

Author(s): Han-Jin Noh, Jinwon Jeong, En-Jin Cho, Kyoo Kim, B. I. Min, and Byeong-Gyu Park

Three separate groups report experimental evidence of novel type-II Dirac quasiparticles, suggesting possible applications in future quantum technology.

[Phys. Rev. Lett. 119, 016401] Published Wed Jul 05, 2017

## Markov Property of the Conformal Field Theory Vacuum and the a Theorem

Author(s): Horacio Casini, Eduardo Testé, and Gonzalo Torroba

Vacuum entanglement entropy is used to prove the irreversibility of renormalization group flows in four or fewer spacetime dimensions.

[Phys. Rev. Lett. 118, 261602] Published Fri Jun 30, 2017

## Individual Tracer Atoms in an Ultracold Dilute Gas

Author(s): Michael Hohmann, Farina Kindermann, Tobias Lausch, Daniel Mayer, Felix Schmidt, Eric Lutz, and Artur WideraThe tracking of individual atoms diffusing in a cold, rarefied gas reveals the influence that a single impact has on randomizing the m…

## Phase-Imposing Initiation of Cherenkov Superradiance Emission by an Ultrashort-Seed Microwave Pulse

Author(s): G. A. Mesyats, N. S. Ginzburg, A. A. Golovanov, G. G. Denisov, I. V. Romanchenko, V. V. Rostov, K. A. Sharypov, V. G. Shpak, S. A. Shunailov, M. R. Ulmaskulov, M. I. Yalandin, and I. V. Zotova

The phase of Chereknov superradiant emission is controlled by the injection of a short electromagnetic pulse.

[Phys. Rev. Lett. 118, 264801] Published Fri Jun 30, 2017

## Markov Property of the Conformal Field Theory Vacuum and the a Theorem

Author(s): Horacio Casini, Eduardo Testé, and Gonzalo Torroba

Vacuum entanglement entropy is used to prove the irreversibility of renormalization group flows in four or fewer spacetime dimensions.

[Phys. Rev. Lett. 118, 261602] Published Fri Jun 30, 2017

## Individual Tracer Atoms in an Ultracold Dilute Gas

Author(s): Michael Hohmann, Farina Kindermann, Tobias Lausch, Daniel Mayer, Felix Schmidt, Eric Lutz, and Artur WideraThe tracking of individual atoms diffusing in a cold, rarefied gas reveals the influence that a single impact has on randomizing the m…

## Phase-Imposing Initiation of Cherenkov Superradiance Emission by an Ultrashort-Seed Microwave Pulse

Author(s): G. A. Mesyats, N. S. Ginzburg, A. A. Golovanov, G. G. Denisov, I. V. Romanchenko, V. V. Rostov, K. A. Sharypov, V. G. Shpak, S. A. Shunailov, M. R. Ulmaskulov, M. I. Yalandin, and I. V. Zotova

The phase of Chereknov superradiant emission is controlled by the injection of a short electromagnetic pulse.

[Phys. Rev. Lett. 118, 264801] Published Fri Jun 30, 2017

## Amplitude Sensing below the Zero-Point Fluctuations with a Two-Dimensional Trapped-Ion Mechanical Oscillator

Author(s): K. A. Gilmore, J. G. Bohnet, B. C. Sawyer, J. W. Britton, and J. J. Bollinger

A spin-based technique is able to measure the center-of-mass motion of a 2D crystal of trapped ions to a precision 40 times below the object’s zero-point energy.

[Phys. Rev. Lett. 118, 263602] Published Thu Jun 29, 2017

## Amplitude Sensing below the Zero-Point Fluctuations with a Two-Dimensional Trapped-Ion Mechanical Oscillator

Author(s): K. A. Gilmore, J. G. Bohnet, B. C. Sawyer, J. W. Britton, and J. J. Bollinger

A spin-based technique is able to measure the center-of-mass motion of a 2D crystal of trapped ions to a precision 40 times below the object’s zero-point energy.

[Phys. Rev. Lett. 118, 263602] Published Thu Jun 29, 2017

## Nuclear Force Imprints Revealed on the Elastic Scattering of Protons with ^{10}C

Author(s): A. Kumar et al.The scattering of protons from a carbon isotope can be used to test models of the strong force.[Phys. Rev. Lett. 118, 262502] Published Wed Jun 28, 2017

## Nuclear Force Imprints Revealed on the Elastic Scattering of Protons with ^{10}C

Author(s): A. Kumar et al.The scattering of protons from a carbon isotope can be used to test models of the strong force.[Phys. Rev. Lett. 118, 262502] Published Wed Jun 28, 2017

## Hidden Area and Mechanical Nonlinearities in Freestanding Graphene

Author(s): Ryan J. T. Nicholl, Nickolay V. Lavrik, Ivan Vlassiouk, Bernadeta R. Srijanto, and Kirill I. Bolotin

The crumpling of graphene sheets explains a “soft spot” in the material’s mechanical response.

[Phys. Rev. Lett. 118, 266101] Published Tue Jun 27, 2017

## Hidden Area and Mechanical Nonlinearities in Freestanding Graphene

Author(s): Ryan J. T. Nicholl, Nickolay V. Lavrik, Ivan Vlassiouk, Bernadeta R. Srijanto, and Kirill I. Bolotin

The crumpling of graphene sheets explains a “soft spot” in the material’s mechanical response.

[Phys. Rev. Lett. 118, 266101] Published Tue Jun 27, 2017

## Magnetically Induced Optical Transparency on a Forbidden Transition in Strontium for Cavity-Enhanced Spectroscopy

Author(s): Matthew N. Winchester, Matthew A. Norcia, Julia R. K. Cline, and James K. Thompson

A magnetic field applied to an atomic sample in an optical cavity generates optical transparency that could be used to enhance the frequency stability of lasers.

[Phys. Rev. Lett. 118, 263601] Published Mon Jun 26, 2017

## Magnetically Induced Optical Transparency on a Forbidden Transition in Strontium for Cavity-Enhanced Spectroscopy

Author(s): Matthew N. Winchester, Matthew A. Norcia, Julia R. K. Cline, and James K. Thompson

A magnetic field applied to an atomic sample in an optical cavity generates optical transparency that could be used to enhance the frequency stability of lasers.

[Phys. Rev. Lett. 118, 263601] Published Mon Jun 26, 2017

## Limits on Spin-Dependent WIMP-Nucleon Cross Section Obtained from the Complete LUX Exposure

Author(s): D. S. Akerib *et al.* (LUX Collaboration)

The best limits, to date, on WIMP spin-dependent interactions with protons and neutrons are obtained by the PICO and LUX collaborations, respectively.

[Phys. Rev. Lett. 118, 251302] Published Fri Jun 23, 2017

## Controlling the Topological Sector of Magnetic Solitons in Exfoliated Cr_{1/3}NbS_{2} Crystals

Author(s): L. Wang, N. Chepiga, D.-K. Ki, L. Li, F. Li, W. Zhu, Y. Kato, O. S. Ovchinnikova, F. Mila, I. Martin, D. Mandrus, and A. F. Morpurgo

Film thickness dependent changes in the topological properties of magnetic solitons are tracked via magnetotransport measurements in exfoliated crystals of the monoaxial chiral helimagnet Cr1/3NbS2.

[Phys. Rev. Lett. 118, 257203] Published Fri Jun 23, 2017