Nature Physics July Issue

If you are unable to see the message below, click here to view.

Advertisement Nature Reviews Materials is an online-only, materials science journal that provides an accurate and balanced discussion on a chosen topic, together with an authoritative voice from experienced researchers. Spanning physics, chemistry, biology and engineering, the journal publishes a broad range of Reviews and Comments from world-leading scientists. EXPLORE THE JOURNAL NOW TABLE OF CONTENTS July 2017 Volume 13, Issue 7 Editorial Thesis Books and Arts Research Highlights News and Views Letters Articles Measure for Measure Advertisement   Take part in our PhD survey for your chance to win Tell us what you love about life as PhD student, about your plans, and some of the challenges you face at this all-important career stage. Take part in Nature Research Group's biennial global PhD survey, and you'll also have the chance to enter a prize draw to win a £100/$150 Amazon gift card. Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement Focus on gender equity in astronomy The June issue of Nature Astronomy includes a Focus on gender equity in astronomy, as data show that female astronomers face discrimination at all stages of their careers. A variety of articles explore the different manifestations of discrimination within our community. READ THE FOCUS   Advertisement FERROIC MATERIALS: CHALLENGES ADN OPPORTUNITIES HOSTING ORGANIZATIONS: The Frontier Institute of Science and Techology (FIST) | Xi’an Jiaotong University | Nature Communications | Nature Reviews Materials| Nature Nanotechnology October 25-27, 2017 Paradise Resort| Xi'an, China REGISTER NOW!   Editorial Top Tools of the trade — and how to use them   p619 doi:10.1038/nphys4215 The role of physicists in finance is changing, as quantitative trading opens an exciting alternative to traditional financial modelling, and data science lures would-be 'quants' away. But the void is being steadily filled by a new type of analyst. Thesis Top A matter of responding to stress   p620 Mark Buchanan doi:10.1038/nphys4203 Books and Arts Top The eternal question   p621 Abigail Klopper reviews Your Brain is a Time Machine: The Neuroscience and Physics of Time by Dean Buonomano doi:10.1038/nphys4199 Exhibition: Destination unknown   p622 Adam Cox doi:10.1038/nphys4197 Research Highlights Top Biomimetics: A sticky job for suckers | Applied physics: Martian dust blower | Statistical physics: Dialectic magnetism | Anyons: Not just another statistic | Meteoritics: Silica puzzle News and Views Top Superconductivity: Ferroelectricity woos pairing   pp624 - 625 Marc Gabay and Jean-Marc Triscone doi:10.1038/nphys4124 Ferroelectricity and superconductivity do not have much in common. Now, a superconducting and a ferroelectric-like state have been found to coexist in a doped perovskite oxide. See also: Letter by Rischau et al. Superconductivity: When Andreev meets Hall   pp625 - 626 Gleb Finkelstein and François Amet doi:10.1038/nphys4195 A device with superconducting contacts connected to graphene in the quantum Hall regime hints at a novel Andreev scattering mechanism. See also: Article by Lee et al. High-harmonic generation: The bright side of downsizing   pp626 - 628 Alexandra Landsman doi:10.1038/nphys4131 The shorter the antenna, the higher the frequency — so what happens when nanoantennas hit optical frequencies? One answer may lead to high-harmonic generation without the need for high-powered lasers. See also: Letter by Vampa et al. Quantum simulation: Solid-state platforms   pp628 - 629 Dario Bercioux and Sander Otte doi:10.1038/nphys4122 Solid-state systems capable of simulating the theoretical predictions of condensed matter are in short supply. Demonstrations of electronic Lieb lattices using two different platforms suggest this may be about to change. See also: Letter by Slot et al. | Letter by Drost et al. Magnetic skyrmions: On a wedge   p629 Bart Verberck doi:10.1038/nphys4200 Topological materials: Monolayers have the edge   pp630 - 631 Aravind Devarakonda and Joseph G. Checkelsky doi:10.1038/nphys4198 Two studies show evidence that single layers of a transition metal dichalcogenide are two-dimensional topological insulators. See also: Letter by Tang et al. | Letter by Fei et al. Biomolecular switches: Driven to peak   pp631 - 632 Yuhai Tu doi:10.1038/nphys4094 A curious peak in the distribution describing stochastic switching in bacterial motility had researchers confounded. But a careful study performed under varying mechanical conditions has now revealed that the breaking of detailed balance is to blame. See also: Article by Wang et al. Physics JOBS of the week Research Fellow in Single Molecule Biophysics University of Leeds Faculty Positions in the Department of Physics Southern University of Science and Technology (SUSTech) Professor (Two faculty positions in experimental physics) University of St Andrews Assistant / Associate / Professor of Experimental Quantum Physics / Technology The University of Nottingham More Science jobs from Physics EVENT International Conference on Theoretical and Applied Physics 06.09.17 Yogyakarta, Indonesia More science events from Letters Top Higgs mode and its decay in a two-dimensional antiferromagnet   pp633 - 637 A. Jain, M. Krautloher, J. Porras, G. H. Ryu, D. P. Chen et al. doi:10.1038/nphys4077 An inelastic neutron scattering study of the two-dimensional antiferromagnet Ca2RuO4 reveals evidence for a condensed-matter analogue of the Higgs mode, and its subsequent decay into transverse Goldstone modes. Higgs amplitude mode in a two-dimensional quantum antiferromagnet near the quantum critical point   pp638 - 642 Tao Hong, Masashige Matsumoto, Yiming Qiu, Wangchun Chen, Thomas R. Gentile et al. doi:10.1038/nphys4182 The presence of a Higgs amplitude mode is revealed in a two-dimensional spin-half quantum antiferromagnet, C9H18N2CuBr4 by means of neutron scattering. A ferroelectric quantum phase transition inside the superconducting dome of Sr1–xCaxTiO3–δ   pp643 - 648 Carl Willem Rischau, Xiao Lin, Christoph P. Grams, Dennis Finck, Steffen Harms et al. doi:10.1038/nphys4085 Slight changes in SrTiO's nominal composition make it superconducting or ferroelectric. A compositional window for which the two phases exist is now reported; varying the fraction of Ca replacing Sr changes the superconducting critical temperature. See also: News and Views by Gabay & Triscone Signatures of two-photon pulses from a quantum two-level system   pp649 - 654 Kevin A. Fischer, Lukas Hanschke, Jakob Wierzbowski, Tobias Simmet, Constantin Dory et al. doi:10.1038/nphys4052 An excited two-level system emits a single photon, but in special circumstances it can emit two. The reason for this unexpected two-photon emission lies with modified Rabi oscillations. Contactless nonlinear optics mediated by long-range Rydberg interactions   pp655 - 658 Hannes Busche, Paul Huillery, Simon W. Ball, Teodora Ilieva, Matthew P. A. Jones et al. doi:10.1038/nphys4058 Single photons stored in the collective Rydberg excitations of two atomic ensembles can interact with each other despite being micrometres apart. Plasmon-enhanced high-harmonic generation from silicon   pp659 - 662 G. Vampa, B. G. Ghamsari, S. Siadat Mousavi, T. J. Hammond, A. Olivieri et al. doi:10.1038/nphys4087 High-harmonic emission from crystalline silicon can be made ten times brighter by exploiting local plasmonic fields in arrays of nano-antennas. See also: News and Views by Landsman Subatomic-scale force vector mapping above a Ge(001) dimer using bimodal atomic force microscopy   pp663 - 667 Yoshitaka Naitoh, Robert Turanský, Ján Brndiar, Yan Jun Li, Ivan Štich et al. doi:10.1038/nphys4083 Measuring vector quantities in nanoscale systems is challenging — often only scalar magnitudes can be experimentally obtained. Now, a multi-frequency atomic force microscopy method for probing the 3D force response of a Ge(001) surface is reported. Topological states in engineered atomic lattices   pp668 - 671 Robert Drost, Teemu Ojanen, Ari Harju and Peter Liljeroth doi:10.1038/nphys4080 Individual vacancies in a chlorine monolayer on copper can be manipulated with scanning tunnelling microscopy to engineer artificial lattices that have topologically nontrivial electronic states. See also: Letter by Slot et al. | News and Views by Bercioux & Otte Experimental realization and characterization of an electronic Lieb lattice   pp672 - 676 Marlou R. Slot, Thomas S. Gardenier, Peter H. Jacobse, Guido C. P. van Miert, Sander N. Kempkes et al. doi:10.1038/nphys4105 Individual carbon monoxide molecules on a copper surface can be manipulated with scanning tunnelling microscopy to realize an electronic Lieb lattice. See also: News and Views by Bercioux & Otte | Letter by Drost et al. Edge conduction in monolayer WTe2   pp677 - 682 Zaiyao Fei, Tauno Palomaki, Sanfeng Wu, Wenjin Zhao, Xinghan Cai et al. doi:10.1038/nphys4091 Experiments showing that a single layer of WTe2 can conduct electricity along its edges while insulating in the interior suggests that this material is a two-dimensional topological insulator. See also: News and Views by Devarakonda & Checkelsky | Letter by Tang et al. Quantum spin Hall state in monolayer 1T'-WTe2   pp683 - 687 Shujie Tang, Chaofan Zhang, Dillon Wong, Zahra Pedramrazi, Hsin-Zon Tsai et al. doi:10.1038/nphys4174 A combination of photoemission and scanning tunnelling spectroscopy measurements provide compelling evidence that single layers of 1T'-WTe2 are a class of quantum spin Hall insulator. See also: News and Views by Devarakonda & Checkelsky | Letter by Fei et al. Light-induced electron localization in a quantum Hall system   pp688 - 692 T. Arikawa, K. Hyodo, Y. Kadoya and K. Tanaka doi:10.1038/nphys4078 Picosecond pulses of terahertz radiation induce non-equilibrium electron dynamics in a GaAs quantum Hall system, suppressing the longitudinal resistivity, and giving rise to a quantized transverse component. Advertisement Nature Awards for Mentoring in Science — Spain Your mentor could win €10,000 Nominations are now open   Articles Top Inducing superconducting correlation in quantum Hall edge states   pp693 - 698 Gil-Ho Lee, Ko-Fan Huang, Dmitri K. Efetov, Di S. Wei, Sean Hart et al. doi:10.1038/nphys4084 A superconductor–graphene junction is shown to exhibit the quantum Hall effect, with the chemical potential of the edge state displaying a sign reversal. Such a system could provide a platform for observing isolated non-Abelian anyonic zero modes. Controlled state-to-state atom-exchange reaction in an ultracold atom–dimer mixture   pp699 - 703 Jun Rui, Huan Yang, Lan Liu, De-Chao Zhang, Ya-Xiong Liu et al. doi:10.1038/nphys4095 Products from ultracold atom–dimer exothermic reactions can be directly observed by controlling the energy released during the process, bringing the study of chemical dynamics to the quantum level. Exploring the ferromagnetic behaviour of a repulsive Fermi gas through spin dynamics   pp704 - 709 G. Valtolina, F. Scazza, A. Amico, A. Burchianti, A. Recati et al. doi:10.1038/nphys4108 Can short-range repulsion alone bring a system into the ferromagnetic phase? The question is explored by investigating the spin dynamics in a resonantly interacting ultracold Fermi gas, and a Stoner-like ferromagnetic instability is observed. Non-equilibrium effect in the allosteric regulation of the bacterial flagellar switch   pp710 - 714 Fangbin Wang, Hui Shi, Rui He, Renjie Wang, Rongjing Zhang et al. doi:10.1038/nphys4081 Flagellated bacteria move by alternately rotating their flagella clockwise and counterclockwise with dynamics that are shown here to be torque dependent. This non-equilibrium effect increases motor sensitivity as the torque increases. See also: News and Views by Tu Advertisement Call for nominations: 2017 John Maddox Prize for Standing up for Science. Recognising the work of individuals who promote science in the face of hostility. Winners will be announced at a reception in London, as well as in Nature, and will receive £2,000. Closing date for nominations is 31st July 2017. Click to learn more   Measure for Measure Top Magnetic disunity   p716 Andreas Trabesinger doi:10.1038/nphys4196 The path to consistent cgs magnetic units has been long and winding, as is the process of universally adopting SI units. Andreas Trabesinger peeks into the history of the field. Top Advertisement Nature Electronics launching  Launching in January 2018, Nature Electronics will publish both fundamental and applied research across all areas of electronics, and will incorporate the work of scientists, engineers and industry. At its core, the journal will be concerned with the development of new technologies and understanding the impact of these developments on society.  Now open for submissions, find out more    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. For event advertising opportunities across the Nature Publishing Group portfolio please contact natureevents@nature.com More Nature Events

You have been sent this Table of Contents Alert because you have opted in to receive it. You can change or discontinue your e-mail alerts at any time, by modifying your preferences on your nature.com account at: www.nature.com/myaccount (You will need to log in to be recognised as a nature.com registrant) For further technical assistance, please contact our registration department For print subscription enquiries, please contact our subscription department For other enquiries, please contact our customer feedback department Springer Nature | One New York Plaza, Suite 4500 | New York | NY 10004-1562 | USA Springer Nature's worldwide offices: London - Paris - Munich - New Delhi - Tokyo - Melbourne San Diego - San Francisco - Washington - New York - Boston Macmillan Publishers Limited is a company incorporated in England and Wales under company number 785998 and whose registered office is located at The Campus, 4 Crinan Street, London, N1 9XW. © 2017 Macmillan Publishers Limited, part of Springer Nature. All Rights Reserved.