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maandag 5 maart 2018

Nature Physics March Issue

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Nature Physics

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March 2018 Volume 14, Issue 3

Books & Arts
Research Highlights
News & Views
Review Articles
Measure for Measure

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Upping the anti    p199


The multiple directions of antiferromagnetic spintronics    pp200 - 203
T. Jungwirth, J. Sinova, A. Manchon, X. Marti, J. Wunderlich et al.


Understanding the microbiome    p204
Mark Buchanan

Books & Arts

Universal Bach    p205
Adam Cox

Research Highlights

Turbulent rain    p206
Andreas H. Trabesinger

Stretch it and see    p206
David Abergel

Control from above    p206
Federico Levi

Ultrarapid microquakes    p206
Jan Philip Kraack

Polaronic spectacle    p206
Yun Li

News & Views

Symmetry-breaking spirals    pp207 - 208
Jörn Davidsen

Space-saving tips to lower stress    pp208 - 209
Vernita D. Gordon

Quantum physics dropwise    pp209 - 210
Tomas Bohr

Liquid beyond the van der Waals paradigm    pp211 - 212
Dmitry S. Petrov

Looking for glass in silk    p212
Abigail Klopper

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Antiferromagnetic spin textures and dynamics    pp213 - 216
O. Gomonay, V. Baltz, A. Brataas & Y. Tserkovnyak

As part of a Focus on antiferromagnetic spintronics, this Perspective looks at the complex and often faster dynamics of antiferromagnetic spin textures.

Synthetic antiferromagnetic spintronics    pp217 - 219
R. A. Duine, Kyung-Jin Lee, Stuart S. P. Parkin & M. D. Stiles

As part of a Focus on antiferromagnetic spintronics, this Perspective examines the opportunities afforded by synthetic, as opposed to crystalline, antiferromagnets.

Review Articles

Spin transport and spin torque in antiferromagnetic devices    pp220 - 228


As part of a focus on antiferromagnetic spintronics, this Review considers the role of spin transport and spin torque in potential antiferromagnetic memory devices.

Antiferromagnetic opto-spintronics    pp229 - 241
P. Němec, M. Fiebig, T. Kampfrath & A. V. Kimel

An overview of how electromagnetic radiation can be used for probing and modification of the magnetic order in antiferromagnets, and possible future research directions.

Topological antiferromagnetic spintronics    pp242 - 251
Libor Šmejkal, Yuriy Mokrousov, Binghai Yan & Allan H. MacDonald

Topological states of various kinds may find application in spintronic devices. The authors review recent progress in this area.


Diffraction and microscopy with attosecond electron pulse trains    pp252 - 256
Yuya Morimoto & Peter Baum

Attosecond light pulses are used to probe ultrafast processes. The experimental observation of attosecond electron pulses now promises the marriage of these techniques with electron microscopy and diffraction.

Attractive force on atoms due to blackbody radiation    pp257 - 260
Philipp Haslinger, Matt Jaffe, Victoria Xu, Osip Schwartz, Matthias Sonnleitner et al.

The effect of blackbody radiation is expected to be very weak. The acceleration due to the attractive optical forces from blackbody radiation is measured in an atom interferometer and, surprisingly, it dominates gravity and radiation pressure

Superradiance of an ensemble of nuclei excited by a free electron laser    pp261 - 264
Aleksandr I. Chumakov, Alfred Q. R. Baron, Ilya Sergueev, Cornelius Strohm, Olaf Leupold et al.

Multiphoton superradiance is observed in a nuclear system excited by an X-ray free-electron laser. Tracking the system decay photon by photon shows strong enhancement of the first photon's decay rate, in good agreement with Dicke's formulation.

Observation of dynamical vortices after quenches in a system with topology    pp265 - 268
N. Fläschner, D. Vogel, M. Tarnowski, B. S. Rem, D.-S. Lühmann et al.

Non-equilibrium signatures of topology—the appearance, movement and annihilation of vortices in a cold-atom system—are identified, showing that topological phase can emerge dynamically from a non-topological state.

Coherent inflationary dynamics for Bose–Einstein condensates crossing a quantum critical point    pp269 - 272
Lei Feng, Logan W. Clark, Anita Gaj & Cheng Chin

An ultracold quantum gas experiment shows that, when it crosses the many-body phase transition, the original ground state can evolve coherently into the new emergent phase, reflecting the initial global coherence presented in the system.

Quantum criticality among entangled spin chains    pp273 - 276
N. Blanc, J. Trinh, L. Dong, X. Bai, A. A. Aczel et al.

Exploiting the magnetic field-induced shift of entropy in certain molecular salts when going from 1D short-range ordering to a 3D quantum critical point could provide a route for producing strongly fluctuating quantum materials.

Ligand-field helical luminescence in a 2D ferromagnetic insulator    pp277 - 281
Kyle L. Seyler, Ding Zhong, Dahlia R. Klein, Shiyuan Gao, Xiaoou Zhang et al.

Atomically thin chromium tri-iodide is shown to be a 2D ferromagnetic insulator with an optical response dominated by ligand-field transitions, emitting circularly polarized photoluminescence with a helicity determined by the magnetization direction.

Spiral wave chimera states in large populations of coupled chemical oscillators    pp282 - 285


A spiral chimera state, composed by an ordered spiral surrounding a core of asynchronous oscillators, is revealed in a large grid of chemical oscillators.

Cellular packing, mechanical stress and the evolution of multicellularity    pp286 - 290
Shane Jacobeen, Jennifer T. Pentz, Elyes C. Graba, Colin G. Brandys, William C. Ratcliff et al.

Understanding how single cells evolved into multicellular organisms requires knowledge of the physical constraints on the evolution of cell clusters. Evidence that an evolution in cell shape delays fracturing offers a route to increased complexity.

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Quantum violation of an instrumental test    pp291 - 296
Rafael Chaves, Gonzalo Carvacho, Iris Agresti, Valerio Di Giulio, Leandro Aolita et al.

Theory and experiment show that quantum correlations violate the instrumental test—a common statistical method used to estimate the strength of causal relationships between two variables.

Experimental evidence for superionic water ice using shock compression    pp297 - 302
Marius Millot, Sebastien Hamel, J. Ryan Rygg, Peter M. Celliers, Gilbert W. Collins et al.

Although predicted to occur in planetary interiors, superionic water ice has proved elusive to identify experimentally. Laser-driven shock-compression experiments on water ice VII now verify its existence.

Strongly anisotropic spin relaxation in graphene–transition metal dichalcogenide heterostructures at room temperature    pp303 - 308
L. Antonio Benítez, Juan F. Sierra, Williams Savero Torres, Aloïs Arrighi, Frédéric Bonell et al.

Large spin–orbit coupling can be induced when graphene interfaces with semiconducting transition metal dichalcogenides, leading to strongly anisotropic spin dynamics. As a result, orientation-dependent spin relaxation is observed.

Frustration and thermalization in an artificial magnetic quasicrystal    pp309 - 314
Dong Shi, Zoe Budrikis, Aaron Stein, Sophie A. Morley, Peter D. Olmsted et al.

Nanomagnets are often used to build artificial systems that are geometrically frustrated, but when quasiperiodic ordering is introduced, an unusual ground state can form, with an ordered skeletal structure surrounding groups of degenerate macrospins.

Statistical projection effects in a hydrodynamic pilot-wave system    pp315 - 319
Pedro J. Sáenz, Tudor Cristea-Platon & John W. M. Bush

Droplets moving on the surface of a vibrating fluid bath mimic the behaviour of electrons in quantum corrals. Introducing submerged features in the bath can even drive the droplets to excite modes that induce effects reminiscent of quantum mirages.

Measure for Measure

In the eye of the beholder    p320
Nina Meinzer

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