Nature Physics February Issue

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Advertisement All content now free to access including archives! Nature Communications is an open access journal that publishes high-quality research from all areas of the natural sciences. Papers published by the journal represent important advances of significance to specialists within each subject area including physics. Visit the website to explore ALL the content available within your field.  TABLE OF CONTENTS February 2016 Volume 12, Issue 2 Editorial Commentary Thesis Books and Arts Research Highlights News and Views Correction Letters Articles Measure for Measure Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement New! Nature Reviews Materials — First issue now published. The first issue of Nature Reviews Materials is now published and free to access online! This new monthly journal provides timely, authoritative Reviews and Comments that are of broad interest and of exceptional quality across the entire spectrum of materials science and engineering. Ensure you stay up to date with future content by registering to receive the monthly e-alert.     Editorial Top The rise of quantum materials   p105 doi:10.1038/nphys3668 Emergent phenomena are common in condensed matter. Their study now extends beyond strongly correlated electron systems, giving rise to the broader concept of quantum materials. Commentary Top Wavefunction-based electronic-structure calculations for solids   pp106 - 107 Peter Fulde doi:10.1038/nphys3653 Many-electron wavefunctions face the exponential-wall problem at large electron numbers. Formulating wavefunctions with the help of cumulants effectively avoids this problem and provides a valuable starting point for electronic-structure calculations for solids. Thesis Top Expressing geometry   p108 Mark Buchanan doi:10.1038/nphys3656 Books and Arts Top Exhibition: Live by data, die by data   pp109 - 110 Niccolò Tempini and Sabina Leonelli doi:10.1038/nphys3652 Research Highlights Top Biophysics: Attachment issues | Metasurfaces: Double up | Helium microscopy: Compare and contrast | Rosetta mission: Space oddity | Statistical physics: Lattice wetting News and Views Top Two-dimensional superconductivity: The Ising on the monolayer   pp112 - 113 Efren Navarro-Moratalla and Pablo Jarillo-Herrero doi:10.1038/nphys3647 Single-layer transition metal dichalcogenides have already made their mark in the world of device physics. Twin studies have now found that they exhibit unconventional Ising pair superconductivity. See also: Letter by Saito et al. | Letter by Xi et al. Protein physics: Forever ageing   pp113 - 114 Ralf Metzler doi:10.1038/nphys3585 Single-molecule techniques have long given us insight into the motion and interactions of individual molecules. But simulations now show that the dynamics inside single proteins is not as simple as we thought - and that proteins are forever changing. See also: Letter by Hu et al. Data visualization: Hall of fame   p115 Iulia Georgescu doi:10.1038/nphys3657 Nuclear physics: The skin of a nucleus   pp116 - 117 Daniel P. Watts doi:10.1038/nphys3654 Ab initio calculations of an atomic nucleus with 48 nucleons set a benchmark for computational nuclear physics and provide new insights into the properties of the atomic nucleus and strongly interacting matter. See also: Article by Hagen et al. Nphys JOBS of the week More Science jobs from Nphys EVENT The XXVII International Conference on Neutrino Physics and Astrophysics 03.07.16 London, UK More science events from Correction Top Correction   p117 doi:10.1038/nphys3655 See also: News and Views by Kubo Letters Top Coherent cyclotron motion beyond Kohn's theorem   pp119 - 123 T. Maag, A. Bayer, S. Baierl, M. Hohenleutner, T. Korn et al. doi:10.1038/nphys3559 Kohn's theorem states that the electron cyclotron resonance is unaffected by many-body interactions in a static magnetic field. Yet, intense terahertz pulses do introduce Coulomb effects between electrons-holding promise for quantum control of electrons. All-optical generation of surface plasmons in graphene   pp124 - 127 T. J. Constant, S. M. Hornett, D. E. Chang and E. Hendry doi:10.1038/nphys3545 The strong confinement of plasmons in graphene makes them interesting for practical applications, but also difficult to excite. An all-optical technique can excite plasmons in graphene over a range of frequencies. Spatially resolved edge currents and guided-wave electronic states in graphene   pp128 - 133 M. T. Allen, O. Shtanko, I. C. Fulga, A. R. Akhmerov, K. Watanabe et al. doi:10.1038/nphys3534 Experiments show that electron waves can be confined to and guided along the edges of monolayer and bilayer graphene sheets, analogous to the guiding of light waves in optical fibres. Field-induced quantum metal-insulator transition in the pyrochlore iridate Nd2Ir2O7   pp134 - 138 Zhaoming Tian, Yoshimitsu Kohama, Takahiro Tomita, Hiroaki Ishizuka, Timothy H. Hsieh et al. doi:10.1038/nphys3567 A combination of strong spin-orbit coupling and electronic correlations in pyrochlore iridates produces a quantum insulator-metal transition that can be induced by applying a magnetic field along specific crystalline axes. Ising pairing in superconducting NbSe2 atomic layers   pp139 - 143 Xiaoxiang Xi, Zefang Wang, Weiwei Zhao, Ju-Hyun Park, Kam Tuen Law et al. doi:10.1038/nphys3538 The superconducting properties of NbSe2 as it approaches the monolayer limit are investigated by means of magnetotransport measurements, uncovering evidence of spin-momentum locking. See also: News and Views by Navarro-Moratalla & Jarillo-Herrero Superconductivity protected by spin-valley locking in ion-gated MoS2   pp144 - 149 Yu Saito, Yasuharu Nakamura, Mohammad Saeed Bahramy, Yoshimitsu Kohama, Jianting Ye et al. doi:10.1038/nphys3580 The electric-field-induced superconducting properties of MoS2 are investigated by means of magneto-transport measurements, uncovering evidence of spin-momentum locking. See also: News and Views by Navarro-Moratalla & Jarillo-Herrero Atomic-scale electronic structure of the cuprate d-symmetry form factor density wave state   pp150 - 156 M. H. Hamidian, S. D. Edkins, Chung Koo Kim, J. C. Davis, A. P. Mackenzie et al. doi:10.1038/nphys3519 A detailed scanning tunnelling microscopy study of the cuprate superconductor Bi2Sr2CaCu2O8+x reveals the microscopic origin of the d-symmetry form factor density wave that exists in the pseudogap phase of this material. Soliton-like magnetic domain wall motion induced by the interfacial Dzyaloshinskii-Moriya interaction   pp157 - 161 Yoko Yoshimura, Kab-Jin Kim, Takuya Taniguchi, Takayuki Tono, Kohei Ueda et al. doi:10.1038/nphys3535 Using large magnetic fields to drive domain walls in nanowires causes precessional motion, which reduces the velocity. The Dzyaloshinskii-Moriya interaction is shown to circumvent this problem by inducing soliton-like magnetic domain wall motion. Emergent reduced dimensionality by vertex frustration in artificial spin ice   pp162 - 165 Ian Gilbert, Yuyang Lao, Isaac Carrasquillo, Liam O’Brien, Justin D. Watts et al. doi:10.1038/nphys3520 The thermodynamic properties of artificial spin ice are strongly influenced by the manner in which its constituent nanomagnets are arranged. The so-called tetris lattice geometry is now shown to lead to emergent one-dimensional correlations. Fracture mechanics determine the lengths of interface ruptures that mediate frictional motion   pp166 - 170 Elsa Bayart, Ilya Svetlizky and Jay Fineberg doi:10.1038/nphys3539 Sliding friction involves the rupturing of interfacial bonds. Measurements of the balance between the dissipation and release of energy when ruptures take place now show that sliding frictional motion can be described by means of fracture mechanics. The dynamics of single protein molecules is non-equilibrium and self-similar over thirteen decades in time   pp171 - 174 Xiaohu Hu, Liang Hong, Micholas Dean Smith, Thomas Neusius, Xiaolin Cheng et al. doi:10.1038/nphys3553 Molecular dynamics simulations reveal the non-equilibrium nature of protein dynamics. Together with spectroscopy data, evidence for self-similar, fractal time behaviour spans 13 decades-the entire range over which proteins function biologically. See also: News and Views by Metzler The flagellar motor of Caulobacter crescentus generates more torque when a cell swims backwards   pp175 - 178 Pushkar P. Lele, Thibault Roland, Abhishek Shrivastava, Yihao Chen and Howard C. Berg doi:10.1038/nphys3528 Certain bacteria swim by rotating a single helical filament, moving forwards and backwards with similar speeds. The discovery that the torque is not equal in both directions links them to multifilament species with opposite filament handedness. Solar coronal magnetic fields derived using seismology techniques applied to omnipresent sunspot waves   pp179 - 185 David B. Jess, Veronika E. Reznikova, Robert S. I. Ryans, Damian J. Christian, Peter H. Keys et al. doi:10.1038/nphys3544 Sunspots are transient cool regions on the Sun's photosphere where concentrated magnetic field lines suppress convection. It turns out that sunspot oscillations can map the coronal magnetic field strength with high resolution. Articles Top Neutron and weak-charge distributions of the 48Ca nucleus   pp186 - 190 G. Hagen, A. Ekström, C. Forssén, G. R. Jansen, W. Nazarewicz et al. doi:10.1038/nphys3529 Determining-and defining-the size of an atomic nucleus is far from easy. First-principles calculations now provide accurate information on the neutron distribution of the neutron-rich 48Ca nucleus-and constraints on the size of a neutron star. See also: News and Views by Watts Observation of a transition from a topologically ordered to a spontaneously broken symmetry phase   pp191 - 195 N. Samkharadze, K. A. Schreiber, G. C. Gardner, M. J. Manfra, E. Fradkin et al. doi:10.1038/nphys3523 Hydrostatic pressure is used as a means to tune the two-dimensional electron gas hosted in a GaAs/AlGaAs crystal from a topologically ordered to a spontaneously broken symmetry phase. Measure for Measure Top Gravity on the balance   p196 Terry Quinn doi:10.1038/nphys3651 Despite intensified efforts, measurements of the gravitational constant continue to fail to converge, as Terry Quinn explains. Top 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

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