Nature Physics April Issue

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Advertisement Focal Point on Japan's Designated National University Initiative Japan's radical new program to boost just a handful of universities has precedents across the world  Access free online TABLE OF CONTENTS April 2018 Volume 14, Issue 4 Editorial Comment Thesis Books & Arts Research Highlights News & Views Perspectives Letters Articles Measure for Measure   Advertisement Do you have a career question?  The Naturejobs podcast features one-on-one Q&As, panel discussions and other exclusive content to help scientists with their careers. Hosted on the Naturejobs blog, the podcast is also available on iTunes and Soundcloud. Listen today!   Editorial   Quantum possibilities    p321 doi:10.1038/s41567-018-0125-9 Comment   A new spin for oxide interfaces    pp322 - 325 J. Varignon, L. Vila, A. Barthélémy & M. Bibes doi:10.1038/s41567-018-0112-1 Thesis   Depths of learning    p326 Mark Buchanan doi:10.1038/s41567-018-0098-8 Books & Arts   Art and the machine    p327 Lina Persechini doi:10.1038/s41567-018-0110-3 Research Highlights   The background story    p328 Andreas H. Trabesinger doi:10.1038/s41567-018-0118-8 Filmmaking in the family    p328 Abigail Klopper doi:10.1038/s41567-018-0119-7 Turn it off and on again    p328 David Abergel doi:10.1038/s41567-018-0120-1 Multidimensional scrambling    p328 Jan Philip Kraack doi:10.1038/s41567-018-0121-0 Power of crowdsourcing    p328 Yun Li doi:10.1038/s41567-018-0122-z News & Views   Threes company    pp329 - 330 Benjamin J. Wieder doi:10.1038/s41567-017-0032-5 Ultimate evidence for the ultimate regime    pp330 - 331 Alexander J. Smits doi:10.1038/s41567-017-0034-3 Don’t close the gates    pp331 - 333 Samuel V. Scarpino doi:10.1038/s41567-017-0028-1 Cosmic-ray tracing    pp333 - 334 Julia Becker Tjus doi:10.1038/s41567-018-0044-9 Quantized, finally    pp334 - 336 Marcel Franz & Dmitry I. Pikulin doi:10.1038/s41567-018-0100-5 Peace in the pipeline    pp336 - 337 Mitul Luhar doi:10.1038/s41567-017-0037-0 Cog in the machine    p337 Federico Levi doi:10.1038/s41567-018-0117-9 Physics JOBS of the week Senior Experimental Scientist Science and Technology Facilities Council (STFC) Postdoctoral Associate (postdoc) - Materials Science of Soft Matter Friedrich Schiller University Associate or Senior Editor, Communications Physics Springer Nature, Nature Research Postdoctoral Scholars or Staff Scientists in Experimental Cold Atom Physics Okinawa Institute of Science and Technology (Light-Matter Interactions Unit) More Science jobs from Physics EVENT The SEENET-MTP School: High Energy and Particle Physics: Theory and Phenomenology (BS2018) 03.06.18 Nis, Serbia More science events from Perspectives   Beyond CMOS computing with spin and polarization    pp338 - 343 Sasikanth Manipatruni, Dmitri E. Nikonov & Ian A. Young doi:10.1038/s41567-018-0101-4 Letters   Superconductivity in few-layer stanene    pp344 - 348 Menghan Liao, Yunyi Zang, Zhaoyong Guan, Haiwei Li, Yan Gong et al. doi:10.1038/s41567-017-0031-6 Stanene is a single sheet of tin atoms. Here, it is shown that a few stacked layers of stanene can be a superconductor. Changing the thickness of the substrate modifies the form of superconductivity and critical temperature.   Three-component fermions with surface Fermi arcs in tungsten carbide    pp349 - 354 J.-Z. Ma, J.-B. He, Y.-F. Xu, B. Q. Lv, D. Chen et al. doi:10.1038/s41567-017-0021-8 Triply degenerate electronic structure—three-component fermions—protected by crystal symmetries is observed in tungsten carbide. The observed Fermi arcs associated with the surface states provide evidence of the non-trivial topology of the states.   Giant spin-splitting and gap renormalization driven by trions in single-layer WS2/h-BN heterostructures    pp355 - 359 Jyoti Katoch, Søren Ulstrup, Roland J. Koch, Simon Moser, Kathleen M. McCreary et al. doi:10.1038/s41567-017-0033-4 A microfocused angle-resolved photoemission spectroscopy study of single layers of WS2 on hexagonal boron nitride reveals that, upon electron doping, trionic interactions cause a giant increase of the spin splitting in the valence band.   Self-hybridization within non-Hermitian localized plasmonic systems    pp360 - 364 Hugo Lourenço-Martins, Pabitra Das, Luiz H. G. Tizei, Raphaël Weil & Mathieu Kociak et al. doi:10.1038/s41567-017-0023-6 A combined theoretical and experimental study of plasmonic nanostructures reveals a self-hybridization effect that arises from the non-Hermitian eigenmodes of localized surface plasmons.   Signatures of a dissipative phase transition in photon correlation measurements    pp365 - 369 Thomas Fink, Anne Schade, Sven Höfling, Christian Schneider & Ataç Imamoglu et al. doi:10.1038/s41567-017-0020-9 Photon correlation measurements in driven-dissipative systems reveal the dynamical properties of dissipative phase transitions, as shown for optical bistability of cavity polaritons in GaAs.   Femtosecond activation of magnetoelectricity    pp370 - 374 D. Bossini, K. Konishi, S. Toyoda, T. Arima, J. Yumoto et al. doi:10.1038/s41567-017-0036-1 Pump–probe measurements of CuB2O4 reveal non-reciprocal directional dichroism, demonstrating the possibility to optically induce magnetoelectricity in a material on a femtosecond timescale.   Interaction modifiers in artificial spin ices    pp375 - 379 Erik Östman, Henry Stopfel, Ioan-Augustin Chioar, Unnar B. Arnalds, Aaron Stein et al. doi:10.1038/s41567-017-0027-2 Coupling strengths differ between neighbours in square artificial spin ices, resulting in the loss of degeneracy. Introducing mesospins on vertices of the array alleviates this problem, by tuning the strength and ratio of the interaction energies.   Amorphous topological insulators constructed from random point sets    pp380 - 385 Noah P. Mitchell, Lisa M. Nash, Daniel Hexner, Ari M. Turner & William T. M. Irvine doi:10.1038/s41567-017-0024-5 Whether spatial order is required for structures that support topological modes remains unclear. Amorphous arrangements of interacting gyroscopes suggest that topology arises in materials for which the only design principle is the local connectivity.   Destabilizing turbulence in pipe flow    pp386 - 390 Jakob Kühnen, Baofang Song, Davide Scarselli, Nazmi Burak Budanur, Michael Riedl et al. doi:10.1038/s41567-017-0018-3 Turbulence in pipe flows causes substantial friction (and therefore economic) losses. An experimental and numerical study now shows a solution might be to initially enhance turbulent mixing, which subsequently leads to a collapse of turbulence.   Critical regimes driven by recurrent mobility patterns of reaction–diffusion processes in networks    pp391 - 395 J. Gómez-Gardeñes, D. Soriano-Paños & A. Arenas doi:10.1038/s41567-017-0022-7 Taking into account the spatial distribution of population and its mobility, a reaction–diffusion model of an epidemic process reveals several different critical regimes, in which human mobility may even be detrimental to the spread of the disease.   Linking high-energy cosmic particles by black-hole jets embedded in large-scale structures    pp396 - 398 Ke Fang & Kohta Murase doi:10.1038/s41567-017-0025-4 A model that accounts for the high-energy neutrino, gamma-ray and ultrahigh-energy cosmic-ray emissions is proposed, suggesting that they emerge from the cosmic rays accelerated by the black-hole jets in galaxy clusters.   Articles   Dynamics of interacting fermions under spin–orbit coupling in an optical lattice clock    pp399 - 404 S. L. Bromley, S. Kolkowitz, T. Bothwell, D. Kedar, A. Safavi-Naini et al. doi:10.1038/s41567-017-0029-0 Many-body effects in an interacting spin-orbit coupled Fermi gas are studied with the help of clock spectroscopy. The results provide a simple view of how strong collective dynamics arise from local interactions in the presence of spin–orbit coupling.   A quantum dipolar spin liquid    pp405 - 410 N. Y. Yao, M. P. Zaletel, D. M. Stamper-Kurn & A. Vishwanath doi:10.1038/s41567-017-0030-7 A large-scale density matrix renormalization group study of the dipolar Heisenberg model reveals evidence for quantum spin liquid ground states on both triangular and kagome lattices.   Robust integer and fractional helical modes in the quantum Hall effect    pp411 - 416 Yuval Ronen, Yonatan Cohen, Daniel Banitt, Moty Heiblum & Vladimir Umansky Helical modes are induced in a high-mobility two-dimensional electron gas without strong spin–orbit coupling. This platform provides a versatile playground for investigating compounded quantum Hall edge states.   Wall roughness induces asymptotic ultimate turbulence    pp417 - 423 Xiaojue Zhu, Ruben A. Verschoof, Dennis Bakhuis, Sander G. Huisman, Roberto Verzicco et al. doi:10.1038/s41567-017-0026-3 Turbulence is seldom confined by boundaries that are perfectly smooth, but wall roughness is usually ignored. A study of flows between rotating cylinders suggests that roughness enhances turbulent transport and alters its scaling behaviour.   Measure for Measure   Elementary again    p424 Mark W. Keller doi:10.1038/s41567-018-0108-x Natureevents is a fully searchable, multi-disciplinary database designed to maximise exposure for events organisers. The contents of the Natureevents Directory are now live. The digital version is available here. Find the latest scientific conferences, courses, meetings and symposia on natureevents.com. 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