Volume 117, Issue 17

21 October 2016

Browse Issues:

On the Cover

A three-loop connected web contributing to the soft anomalous dimension governing long-distance singularities of multileg gauge-theory scattering amplitudes of massless partons.

From the article:

Three-Loop Corrections to the Soft Anomalous Dimension in Multileg Scattering
Øyvind Almelid, Claude Duhr, and Einan Gardi
Phys. Rev. Lett. 117, 172002 (2016)

HIGHLIGHTED ARTICLES

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Lightweight Mechanical Metamaterials with Tunable Negative Thermal Expansion

Qiming Wang, Julie A. Jackson, Qi Ge, Jonathan B. Hopkins, Christopher M. Spadaccini, and Nicholas X. Fang

Phys. Rev. Lett. 117, 175901 (2016) - Published 21 October, 2016

The volume of a star-shaped structure decreases when baked. Combining this technology with more conventional structures could lead to materials that don’t expand or contract with temperature changes.

FEATURED IN PHYSICS

Experimental Time-Optimal Universal Control of Spin Qubits in Solids

Jianpei Geng, Yang Wu, Xiaoting Wang, Kebiao Xu, Fazhan Shi, Yijin Xie, Xing Rong, and Jiangfeng Du

Phys. Rev. Lett. 117, 170501 (2016) - Published 19 October, 2016

New experiments find the fastest way to manipulate logic gates with two qubits as inputs.

FEATURED IN PHYSICS

Transient Weakening of Earth’s Magnetic Shield Probed by a Cosmic Ray Burst

P. K. Mohanty, K. P. Arunbabu, T. Aziz, S. R. Dugad, S. K. Gupta, B. Hariharan, P. Jagadeesan, A. Jain, S. D. Morris, B. S. Rao, Y. Hayashi, S. Kawakami, A. Oshima, S. Shibata, S. Raha, P. Subramanian, and H. Kojima

Phys. Rev. Lett. 117, 171101 (2016) - Published 20 October, 2016

Observations with India’s cosmic-ray telescope indicate that Earth’s magnetic field weakened during a 2015 geomagnetic storm, allowing cosmic rays to pass through.

EDITORS' SUGGESTION

Spin Pumping and Measurement of Spin Currents in Optical Superlattices

C. Schweizer, M. Lohse, R. Citro, and I. Bloch

Phys. Rev. Lett. 117, 170405 (2016) - Published 21 October, 2016

A spin pump is experimentally demonstrated using ultracold boson atoms in an optical superlattice.

EDITORS' SUGGESTION

Resonant Optomechanics with a Vibrating Carbon Nanotube and a Radio-Frequency Cavity

N. Ares, T. Pei, A. Mavalankar, M. Mergenthaler, J. H. Warner, G. A. D. Briggs, and E. A. Laird

Phys. Rev. Lett. 117, 170801 (2016) - Published 21 October, 2016

Experimentalists demonstrate resonant optomechanical coupling between a carbon nanotube and a microwave cavity.

EDITORS' SUGGESTION

Quantum Phase Transition in the Shape of Zr isotopes

Tomoaki Togashi, Yusuke Tsunoda, Takaharu Otsuka, and Noritaka Shimizu

Phys. Rev. Lett. 117, 172502 (2016) - Published 17 October, 2016

High-resolution inelastic electron scattering on $^{96}$ Zr establishes shape coexistence—where two nearby states possess distinct shapes—for this nucleus. Monte Carlo shell-model calculations indicate that the shape change in Zr isotopes is a quantum phase transition.

EDITORS' SUGGESTION

First Measurement of Collectivity of Coexisting Shapes Based on Type II Shell Evolution: The Case of ${}^{96}{Zr}$

C. Kremer, S. Aslanidou, S. Bassauer, M. Hilcker, A. Krugmann, P. von Neumann-Cosel, T. Otsuka, N. Pietralla, V. Yu. Ponomarev, N. Shimizu, M. Singer, G. Steinhilber, T. Togashi, Y. Tsunoda, V. Werner, and M. Zweidinger

Phys. Rev. Lett. 117, 172503 (2016) - Published 17 October, 2016

EDITORS' SUGGESTION

Nonlinear Dynamics and Strong Cavity Cooling of Levitated Nanoparticles

P. Z. G. Fonseca, E. B. Aranas, J. Millen, T. S. Monteiro, and P. F. Barker

Phys. Rev. Lett. 117, 173602 (2016) - Published 21 October, 2016

Millilelvin cavity cooling of levitated nanoparticles is experimentally demonstrated.

EDITORS' SUGGESTION

High Efficiency Energy Extraction from a Relativistic Electron Beam in a Strongly Tapered Undulator

N. Sudar, P. Musumeci, J. Duris, I. Gadjev, M. Polyanskiy, I. Pogorelsky, M. Fedurin, C. Swinson, K. Kusche, M. Babzien, and A. Gover

Phys. Rev. Lett. 117, 174801 (2016) - Published 19 October, 2016

An unprecedented amount of energy extracted from a relativistic electron beam is converted into coherent radiation, a result that could enable high-average-power light sources to be created.

EDITORS' SUGGESTION

Electron Plasmas Cooled by Cyclotron-Cavity Resonance

A. P. Povilus, N. D. DeTal, L. T. Evans, N. Evetts, J. Fajans, W. N. Hardy, E. D. Hunter, I. Martens, F. Robicheaux, S. Shanman, C. So, X. Wang, and J. S. Wurtele

Phys. Rev. Lett. 117, 175001 (2016) - Published 21 October, 2016

Nonneutral plasma cooling can be enhanced by up to a factor of 14 using an electromagnetic cavity with 10 $^{5}$ electrons.

EDITORS' SUGGESTION

Direct Observation of a Long-Range Field Effect from Gate Tuning of Nonlocal Conductivity

Lin Wang, Ignacio Gutiérrez-Lezama, Céline Barreteau, Dong-Keun Ki, Enrico Giannini, and Alberto F. Morpurgo

Phys. Rev. Lett. 117, 176601 (2016) - Published 19 October, 2016

An unconventional long-range field effect in WTe $_{2}$ is used to gate-tune the bulk properties of the material. This method could be used to gate-tune electronic properties deep in the interior of conducting materials, avoiding limitations imposed by electrostatic screening.

EDITORS' SUGGESTION

Microwave-Induced Oscillations in Magnetocapacitance: Direct Evidence for Nonequilibrium Occupation of Electronic States

S. I. Dorozhkin, A. A. Kapustin, V. Umansky, K. von Klitzing, and J. H. Smet

Phys. Rev. Lett. 117, 176801 (2016) - Published 17 October, 2016

Experiments show that microwave-induced magneto-oscillations in the capacitance of two-dimensional electron gases differ from the corresponding oscillations in resistance. The oscillations reflect a nonequilibrium energy distribution of electrons and support a quantum origin of the effect.

LETTERS

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

Time-Resolved Observation of Thermalization in an Isolated Quantum System

Govinda Clos, Diego Porras, Ulrich Warring, and Tobias Schaetz

Phys. Rev. Lett. 117, 170401 (2016) - Published 19 October, 2016

Measuring Incompatible Observables by Exploiting Sequential Weak Values

F. Piacentini, A. Avella, M. P. Levi, M. Gramegna, G. Brida, I. P. Degiovanni, E. Cohen, R. Lussana, F. Villa, A. Tosi, F. Zappa, and M. Genovese

Phys. Rev. Lett. 117, 170402 (2016) - Published 20 October, 2016

Experimental Test of Compatibility-Loophole-Free Contextuality with Spatially Separated Entangled Qutrits

Xiao-Min Hu, Jiang-Shan Chen, Bi-Heng Liu, Yu Guo, Yun-Feng Huang, Zong-Quan Zhou, Yong-Jian Han, Chuan-Feng Li, and Guang-Can Guo

Phys. Rev. Lett. 117, 170403 (2016) - Published 20 October, 2016

Anomalous Thermalization in Ergodic Systems

David J. Luitz and Yevgeny Bar Lev

Phys. Rev. Lett. 117, 170404 (2016) - Published 21 October, 2016

EDITORS' SUGGESTION

Spin Pumping and Measurement of Spin Currents in Optical Superlattices

C. Schweizer, M. Lohse, R. Citro, and I. Bloch

Phys. Rev. Lett. 117, 170405 (2016) - Published 21 October, 2016

A spin pump is experimentally demonstrated using ultracold boson atoms in an optical superlattice.

FEATURED IN PHYSICS

Experimental Time-Optimal Universal Control of Spin Qubits in Solids

Jianpei Geng, Yang Wu, Xiaoting Wang, Kebiao Xu, Fazhan Shi, Yijin Xie, Xing Rong, and Jiangfeng Du

Phys. Rev. Lett. 117, 170501 (2016) - Published 19 October, 2016

New experiments find the fastest way to manipulate logic gates with two qubits as inputs.

Comparing Experiments to the Fault-Tolerance Threshold

Richard Kueng, David M. Long, Andrew C. Doherty, and Steven T. Flammia

Phys. Rev. Lett. 117, 170502 (2016) - Published 21 October, 2016

EDITORS' SUGGESTION

Resonant Optomechanics with a Vibrating Carbon Nanotube and a Radio-Frequency Cavity

N. Ares, T. Pei, A. Mavalankar, M. Mergenthaler, J. H. Warner, G. A. D. Briggs, and E. A. Laird

Phys. Rev. Lett. 117, 170801 (2016) - Published 21 October, 2016

Experimentalists demonstrate resonant optomechanical coupling between a carbon nanotube and a microwave cavity.

Gravitation and Astrophysics

FEATURED IN PHYSICS

Transient Weakening of Earth’s Magnetic Shield Probed by a Cosmic Ray Burst

Phys. Rev. Lett. 117, 171101 (2016) - Published 20 October, 2016

Observations with India’s cosmic-ray telescope indicate that Earth’s magnetic field weakened during a 2015 geomagnetic storm, allowing cosmic rays to pass through.

New Target for Cosmic Axion Searches

Daniel Baumann, Daniel Green, and Benjamin Wallisch

Phys. Rev. Lett. 117, 171301 (2016) - Published 20 October, 2016

Elementary Particles and Fields

Four-Gluon Scattering at Three Loops, Infrared Structure, and the Regge Limit

J. M. Henn and B. Mistlberger

Phys. Rev. Lett. 117, 171601 (2016) - Published 20 October, 2016

Two-Jet Rate in $e^{+} e^{-}$ at Next-to-Next-to-Leading-Logarithmic Order

Andrea Banfi, Heather McAslan, Pier Francesco Monni, and Giulia Zanderighi

Phys. Rev. Lett. 117, 172001 (2016) - Published 19 October, 2016

Three-Loop Corrections to the Soft Anomalous Dimension in Multileg Scattering

Øyvind Almelid, Claude Duhr, and Einan Gardi

Phys. Rev. Lett. 117, 172002 (2016) - Published 20 October, 2016

Nuclear Physics

Quantized Chiral Magnetic Current from Reconnections of Magnetic Flux

Yuji Hirono, Dmitri E. Kharzeev, and Yi Yin

Phys. Rev. Lett. 117, 172301 (2016) - Published 20 October, 2016

Structure of ${}^{78}{Ni}$ from First-Principles Computations

G. Hagen, G. R. Jansen, and T. Papenbrock

Phys. Rev. Lett. 117, 172501 (2016) - Published 17 October, 2016

EDITORS' SUGGESTION

Quantum Phase Transition in the Shape of Zr isotopes

Tomoaki Togashi, Yusuke Tsunoda, Takaharu Otsuka, and Noritaka Shimizu

Phys. Rev. Lett. 117, 172502 (2016) - Published 17 October, 2016

EDITORS' SUGGESTION

First Measurement of Collectivity of Coexisting Shapes Based on Type II Shell Evolution: The Case of ${}^{96}{Zr}$

Phys. Rev. Lett. 117, 172503 (2016) - Published 17 October, 2016

Atomic, Molecular, and Optical Physics

High-Precision Ramsey-Comb Spectroscopy at Deep Ultraviolet Wavelengths

R. K. Altmann, S. Galtier, L. S. Dreissen, and K. S. E. Eikema

Phys. Rev. Lett. 117, 173201 (2016) - Published 20 October, 2016

Superradiant Phase Transition in a Superconducting Circuit in Thermal Equilibrium

Motoaki Bamba, Kunihiro Inomata, and Yasunobu Nakamura

Phys. Rev. Lett. 117, 173601 (2016) - Published 20 October, 2016

EDITORS' SUGGESTION

Nonlinear Dynamics and Strong Cavity Cooling of Levitated Nanoparticles

P. Z. G. Fonseca, E. B. Aranas, J. Millen, T. S. Monteiro, and P. F. Barker

Phys. Rev. Lett. 117, 173602 (2016) - Published 21 October, 2016

Millilelvin cavity cooling of levitated nanoparticles is experimentally demonstrated.

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

Nonlinear Response of Inertial Tracers in Steady Laminar Flows: Differential and Absolute Negative Mobility

A. Sarracino, F. Cecconi, A. Puglisi, and A. Vulpiani

Phys. Rev. Lett. 117, 174501 (2016) - Published 20 October, 2016

Plasma and Beam Physics

EDITORS' SUGGESTION

High Efficiency Energy Extraction from a Relativistic Electron Beam in a Strongly Tapered Undulator

N. Sudar, P. Musumeci, J. Duris, I. Gadjev, M. Polyanskiy, I. Pogorelsky, M. Fedurin, C. Swinson, K. Kusche, M. Babzien, and A. Gover

Phys. Rev. Lett. 117, 174801 (2016) - Published 19 October, 2016

An unprecedented amount of energy extracted from a relativistic electron beam is converted into coherent radiation, a result that could enable high-average-power light sources to be created.

Frequency-Comb Spectrum of Periodic-Patterned Signals

Johannes L. Steinmann, Edmund Blomley, Miriam Brosi, Erik Bründermann, Michele Caselle, Jeffrey L. Hesler, Nicole Hiller, Benjamin Kehrer, Yves-Laurent Mathis, Michael J. Nasse, Juliane Raasch, Manuel Schedler, Patrik Schönfeldt, Marcel Schuh, Markus Schwarz, Michael Siegel, Nigel Smale, Marc Weber, and Anke-Susanne Müller

Phys. Rev. Lett. 117, 174802 (2016) - Published 20 October, 2016

EDITORS' SUGGESTION

Electron Plasmas Cooled by Cyclotron-Cavity Resonance

A. P. Povilus, N. D. DeTal, L. T. Evans, N. Evetts, J. Fajans, W. N. Hardy, E. D. Hunter, I. Martens, F. Robicheaux, S. Shanman, C. So, X. Wang, and J. S. Wurtele

Phys. Rev. Lett. 117, 175001 (2016) - Published 21 October, 2016

Nonneutral plasma cooling can be enhanced by up to a factor of 14 using an electromagnetic cavity with 10 $^{5}$ electrons.

Condensed Matter: Structure, etc.

Longitudinal Spin Relaxation of Optically Pumped Rubidium Atoms in Solid Parahydrogen

Sunil Upadhyay, Andrew N. Kanagin, Chase Hartzell, Tim Christy, W. Patrick Arnott, Takamasa Momose, David Patterson, and Jonathan D. Weinstein

Phys. Rev. Lett. 117, 175301 (2016) - Published 20 October, 2016

Superradiance Induced Particle Flow via Dynamical Gauge Coupling

W. Zheng and N. R. Cooper

Phys. Rev. Lett. 117, 175302 (2016) - Published 20 October, 2016

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Lightweight Mechanical Metamaterials with Tunable Negative Thermal Expansion

Qiming Wang, Julie A. Jackson, Qi Ge, Jonathan B. Hopkins, Christopher M. Spadaccini, and Nicholas X. Fang

Phys. Rev. Lett. 117, 175901 (2016) - Published 21 October, 2016

Quantitative STEM Imaging of Order-Disorder Phenomena in Double Perovskite Thin Films

B. D. Esser, A. J. Hauser, R. E. A. Williams, L. J. Allen, P. M. Woodward, F. Y. Yang, and D. W. McComb

Phys. Rev. Lett. 117, 176101 (2016) - Published 20 October, 2016

Critical Drying of Liquids

Robert Evans, Maria C. Stewart, and Nigel B. Wilding

Phys. Rev. Lett. 117, 176102 (2016) - Published 21 October, 2016

Condensed Matter: Electronic Properties, etc.

Field-Driven Mott Gap Collapse and Resistive Switch in Correlated Insulators

G. Mazza, A. Amaricci, M. Capone, and M. Fabrizio

Phys. Rev. Lett. 117, 176401 (2016) - Published 20 October, 2016

EDITORS' SUGGESTION

Direct Observation of a Long-Range Field Effect from Gate Tuning of Nonlocal Conductivity

Lin Wang, Ignacio Gutiérrez-Lezama, Céline Barreteau, Dong-Keun Ki, Enrico Giannini, and Alberto F. Morpurgo

Phys. Rev. Lett. 117, 176601 (2016) - Published 19 October, 2016

Spin Hall Effect and Origins of Nonlocal Resistance in Adatom-Decorated Graphene

D. Van Tuan, J. M. Marmolejo-Tejada, X. Waintal, B. K. Nikolić, S. O. Valenzuela, and S. Roche

Phys. Rev. Lett. 117, 176602 (2016) - Published 20 October, 2016

Slater Insulator in Iridate Perovskites with Strong Spin-Orbit Coupling

Q. Cui, J.-G. Cheng, W. Fan, A. E. Taylor, S. Calder, M. A. McGuire, J.-Q. Yan, D. Meyers, X. Li, Y. Q. Cai, Y. Y. Jiao, Y. Choi, D. Haskel, H. Gotou, Y. Uwatoko, J. Chakhalian, A. D. Christianson, S. Yunoki, J. B. Goodenough, and J.-S. Zhou

Phys. Rev. Lett. 117, 176603 (2016) - Published 20 October, 2016

EDITORS' SUGGESTION

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

ERRATA

Erratum: Structure and Dynamics of Loosely Cross-Linked Ionic Microgel Dispersions in the Fluid Regime [Phys. Rev. Lett. 109, 048302 (2012)]

P. Holmqvist, P. S. Mohanty, G. Nägele, P. Schurtenberger, and M. Heinen

Phys. Rev. Lett. 117, 179901 (2016) - Published 20 October, 2016

Erratum: Large-Scale Shell-Model Analysis of the Neutrinoless $β β$ Decay of ${}^{48}{Ca}$ [Phys. Rev. Lett. 116, 112502 (2016)]

Y. Iwata, N. Shimizu, T. Otsuka, Y. Utsuno, J. Menéndez, M. Honma, and T. Abe

Phys. Rev. Lett. 117, 179902 (2016) - Published 21 October, 2016