Author(s): Karel Proesmans and Christian Van den BroeckPeriodically driven thermodynamic systems near equilibrium cannot have finite fluxes with zero dissipation.[Phys. Rev. Lett. 115, 090601] Published Thu Aug 27, 2015
Diffraction-Unlimited Position Measurement of Ultracold Atoms in an Optical Lattice
Author(s): Yuto Ashida and Masahito Ueda
Ultracold atoms in an optical lattice could be imaged on length scales below the diffraction limit by tracking the collapse of the system’s many-body wavefunction.
[Phys. Rev. Lett. 115, 095301] Published Wed Aug 26, 2015
Precision Measurement of the Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at sqrt[s] =200 GeV
Author(s): L. Adamczyk et al. (STAR Collaboration)Measurements from STAR collaboration experiments at RHIC reveal that gluons and quarks may contribute equally to the spin angular momentum of a proton.[Phys. Rev. Lett. 115, 092002] Published Wed Aug 26…
First Detection of the Acoustic Oscillation Phase Shift Expected from the Cosmic Neutrino Background
Author(s): Brent Follin, Lloyd Knox, Marius Millea, and Zhen PanThe free-streaming cosmic neutrino background has been observed by a unique decomposition of the acoustic oscillations in the cosmic microwave background.[Phys. Rev. Lett. 115, 091301] Pub…
New Method for a Continuous Determination of the Spin Tune in Storage Rings and Implications for Precision Experiments
Author(s): D. Eversmann et al. (JEDI collaboration)The spin precession frequency of a charged particle in a storage ring is determined with substantially increased precision. This allows for improved measurements of the electric dipole moments of charg…
Magnetism of Gadolinium: A First-Principles Perspective
Author(s): L. Oroszlány, A. Deák, E. Simon, S. Khmelevskyi, and L. Szunyogh
The magnetic properties of gadolinium at non-zero temperature are different at the surface of the material and in the bulk for both the paramagnetic and ferromagnetic phases according to layer resolved density-functional theory calculations.
[Phys. Rev. Lett. 115, 096402] Published Wed Aug 26, 2015
All-Electric Access to the Magnetic-Field-Invariant Magnetization of Antiferromagnets
Author(s): Tobias Kosub, Martin Kopte, Florin Radu, Oliver G. Schmidt, and Denys Makarov
A new technique — spinning-current anomalous Hall magnetometry — measures the field invariant magnetization of antiferromagnets with high precision by cycling current and voltage probes.
[Phys. Rev. Lett. 115, 097201] Published Wed Aug 26, 2015
Optimized Effective Potential for Quantum Electrodynamical Time-Dependent Density Functional Theory
Author(s): Camilla Pellegrini, Johannes Flick, Ilya V. Tokatly, Heiko Appel, and Angel RubioTime-dependent density functional theory for quantum electrodynamics is successfully applied to electronic structure calculations via a quantum-optical treatmen…
X-ray Detection of Transient Magnetic Moments Induced by a Spin Current in Cu
Author(s): R. Kukreja, S. Bonetti, Z. Chen, D. Backes, Y. Acremann, J. A. Katine, A. D. Kent, H. A. Dürr, H. Ohldag, and J. Stöhr
X-ray magnetic circular dichroism detects the transient magnetic moments that are induced in a nonmagnetic material by spin injection from a ferromagnet.
[Phys. Rev. Lett. 115, 096601] Published Mon Aug 24, 2015
Tracking Primary Thermalization Events in Graphene with Photoemission at Extreme Time Scales
Author(s): I. Gierz, F. Calegari, S. Aeschlimann, M. Chávez Cervantes, C. Cacho, R. T. Chapman, E. Springate, S. Link, U. Starke, C. R. Ast, and A. Cavalleri
Ultrafast dynamics of photoexcited electron-hole pairs produced by subfemtosecond pulses in graphene may have implications for petahertz electronic and optoelectronic devices.
[Phys. Rev. Lett. 115, 086803] Published Fri Aug 21, 2015
Observation of Noise-Assisted Transport in an All-Optical Cavity-Based Network
Author(s): Silvia Viciani, Manuela Lima, Marco Bellini, and Filippo CarusoA system of optical fibers and cavities is used to simulate noise-assisted transport through a network. This system could potentially allow the contribution of noise to the trans…
Nanostructure of Edge Dislocations in a Smectic-C^{*} Liquid Crystal
Author(s): C. Zhang, A. M. Grubb, A. J. Seed, P. Sampson, A. Jákli, and O. D. Lavrentovich
Edge dislocations in chiral smectic liquid crystals are directly observed using cryo-transmission electron microscopy.
[Phys. Rev. Lett. 115, 087801] Published Thu Aug 20, 2015
Evidence for Astrophysical Muon Neutrinos from the Northern Sky with IceCube
Author(s): M. G. Aartsen et al. (IceCube Collaboration)
Using Earth as a neutrino filter, the IceCube neutrino experiment strengthens its claim that it has detected neutrinos from powerful astrophysical accelerators outside our Galaxy.
[Phys. Rev. Lett. 115, 081102] Published Thu Aug 20, 2015
Demonstration of a Circularly Polarized Plasma-Based Soft-X-Ray Laser
Author(s): A. Depresseux, E. Oliva, J. Gautier, F. Tissandier, G. Lambert, B. Vodungbo, J-P. Goddet, A. Tafzi, J. Nejdl, M. Kozlova, G. Maynard, H. T. Kim, K. Ta Phuoc, A. Rousse, P. Zeitoun, and S. Sebban
Researchers have developed a compact, circularly polarized x-ray source for studying biological matrerials.
[Phys. Rev. Lett. 115, 083901] Published Wed Aug 19, 2015
Observation of a New Narrow Axial-Vector Meson a_{1} (1420)
Author(s): C. Adolph et al. (COMPASS Collaboration)A new axial-vector meson is observed during the diffractive reaction of pions on a hydrogen target.[Phys. Rev. Lett. 115, 082001] Published Wed Aug 19, 2015
Observation of Magnetoelectric Multiferroicity in a Cubic Perovskite System: LaMn_{3} Cr_{4} O_{12}
Author(s): Xiao Wang, Yisheng Chai, Long Zhou, Huibo Cao, Clarina-dela Cruz, Junye Yang, Jianhong Dai, Yunyu Yin, Zhen Yuan, Sijia Zhang, Runze Yu, Masaki Azuma, Yuichi Shimakawa, Huimin Zhang, Shuai Dong, Young Sun, Changqing Jin, and Youwen Long
Electric and magnetic polarization are spontaneously produced in an unlikely material—one with a highly symmetric crystal structure.
[Phys. Rev. Lett. 115, 087601] Published Tue Aug 18, 2015
Formation of Shear Bands in Drying Colloidal Dispersions
Author(s): Pree-Cha Kiatkirakajorn and Lucas GoehringExperiments explain why solidifying colloids sometimes form zigzagging stripes as they dry.[Phys. Rev. Lett. 115, 088302] Published Tue Aug 18, 2015
New Area Law in General Relativity
Author(s): Raphael Bousso and Netta Engelhardt
A relation between the area of a novel class of surfaces and the thermodynamic entropy has been proven, extending the results of Hawking’s 1971 area theorem.
[Phys. Rev. Lett. 115, 081301] Published Tue Aug 18, 2015
Indication of Gamma-Ray Emission from the Newly Discovered Dwarf Galaxy Reticulum II
Author(s): Alex Geringer-Sameth, Matthew G. Walker, Savvas M. Koushiappas, Sergey E. Koposov, Vasily Belokurov, Gabriel Torrealba, and N. Wyn EvansAre gamma rays from a nearby dwarf galaxy a beacon of dark matter or a false alarm?[Phys. Rev. Lett. 115,…
Self-Propelled Droplet Removal from Hydrophobic Fiber-Based Coalescers
Author(s): Kungang Zhang, Fangjie Liu, Adam J. Williams, Xiaopeng Qu, James J. Feng, and Chuan-Hua ChenLiquid droplets that gather on a fine, water-repelling fiber kick themselves off the fiber as they coalesce.[Phys. Rev. Lett. 115, 074502] Published …
Hydrodynamics Beyond the Gradient Expansion: Resurgence and Resummation
Author(s): Michal P. Heller and Michał Spaliński
The method of resurgence used in quantum field theories can address foundational aspects of relativistic hydrodynamics and its applicability to systems having large flow gradients.
[Phys. Rev. Lett. 115, 072501] Published Fri Aug 14, 2015
Gravity and the Stability of the Higgs Vacuum
Author(s): Philipp Burda, Ruth Gregory, and Ian G. Moss
In some models, primordial black holes would have acted as seeds of Higgs vacuum decay reducing the Universe’s lifetime from trillions of years to fractions of a second. These regions of parameter space are thus ruled out.
[Phys. Rev. Lett. 115, 071303] Published Thu Aug 13, 2015
Probing Charges on the Atomic Scale by Means of Atomic Force Microscopy
Author(s): F. Albrecht, J. Repp, M. Fleischmann, M. Scheer, M. Ondráček, and P. Jelínek
A new scanning-probe-microscopy technique can image the polarity of individual chemical bonds.
[Phys. Rev. Lett. 115, 076101] Published Thu Aug 13, 2015
Four-Dimensional Entropy from Three-Dimensional Gravity
Author(s): S. CarlipThe entropy of a black hole in loop quantum gravity is computed. The four-dimensional boundary term, that must be added to the loop quantum gravity action due to the presence of a black hole, maps to gravity in three dimensional spa…
X-Ray Diffraction of Solid Tin to 1.2 TPa
Author(s): A. Lazicki, J. R. Rygg, F. Coppari, R. Smith, D. Fratanduono, R. G. Kraus, G. W. Collins, R. Briggs, D. G. Braun, D. C. Swift, and J. H. Eggert
Solid tin has been compressed to a record high pressure without undergoing melting.
[Phys. Rev. Lett. 115, 075502] Published Wed Aug 12, 2015
Observation of J/ψp Resonances Consistent with Pentaquark States in Λ_{b}^{0} →J/ψK^{−} p Decays
Author(s): R. Aaij et al. (LHCb Collaboration)A new type of particle containing five quarks has been observed by the LHCb experiment.[Phys. Rev. Lett. 115, 072001] Published Wed Aug 12, 2015
Testing the Dark Matter Scenario for PeV Neutrinos Observed in IceCube
Author(s): Kohta Murase, Ranjan Laha, Shin’ichiro Ando, and Markus Ahlers
A class of very-heavy dark matter models could account for the ultra high energy neutrinos observed by IceCube and will be tested by future γ-ray detectors and neutrino telescopes.
[Phys. Rev. Lett. 115, 071301] Published Tue Aug 11, 2015
Confinement Induced Plastic Crystal-to-Crystal Transitions in Rodlike Particles with Long-Ranged Repulsion
Author(s): Bing Liu, Thijs H. Besseling, Alfons van Blaaderen, and Arnout ImhofRod-shaped particles in a liquid arrange into a variety of structures when subjected to confining walls, an effect that might be used to design optical materials.[Phys. Rev….
Experimental Observation of Quasicrystal Growth
Author(s): Keisuke Nagao, Tomoaki Inuzuka, Kazue Nishimoto, and Keiichi EdagawaIn situ high-resolution transmission electron microscopy has been used to spot quasicrystals in the act of growing.[Phys. Rev. Lett. 115, 075501] Published Mon Aug 10, 2015
Hot-Electron Intraband Luminescence from Single Hot Spots in Noble-Metal Nanoparticle Films
Author(s): Tobias Haug, Philippe Klemm, Sebastian Bange, and John M. LuptonVisible light emission from silver and gold nanoparticle films irradiated with ultrashort infrared pulses is governed by hot electron recombination within the conduction band.[P…
Synchronization as Aggregation: Cluster Kinetics of Pulse-Coupled Oscillators
Author(s): Kevin P. O’Keeffe, P. L. Krapivsky, and Steven H. Strogatz
An analysis of a model that might describe fireflies and neurons shows the path to synchronization occurring in groups of charge-and-fire oscillators.
[Phys. Rev. Lett. 115, 064101] Published Thu Aug 06, 2015
Superradiance for Atoms Trapped along a Photonic Crystal Waveguide
Author(s): A. Goban, C.-L. Hung, J. D. Hood, S.-P. Yu, J. A. Muniz, O. Painter, and H. J. Kimble
Trapping atoms near a photonic crystal waveguide produces strong atom-photon coupling that results in enhanced atomic emission of light.
[Phys. Rev. Lett. 115, 063601] Published Wed Aug 05, 2015
Ion Acceleration Using Relativistic Pulse Shaping in Near-Critical-Density Plasmas
Author(s): J. H. Bin, W. J. Ma, H. Y. Wang, M. J. V. Streeter, C. Kreuzer, D. Kiefer, M. Yeung, S. Cousens, P. S. Foster, B. Dromey, X. Q. Yan, R. Ramis, J. Meyer-ter-Vehn, M. Zepf, and J. Schreiber
Laser pulses that have passed through a carbon-nanotube foam are ideally suited to accelerate ions.
[Phys. Rev. Lett. 115, 064801] Published Mon Aug 03, 2015
Intramolecular Force Contrast and Dynamic Current-Distance Measurements at Room Temperature
Author(s): F. Huber, S. Matencio, A. J. Weymouth, C. Ocal, E. Barrena, and F. J. Giessibl
An improved take on an existing approach provides intramolecular imaging of molecules adsorbed on a solid surface at room temperature.
[Phys. Rev. Lett. 115, 066101] Published Mon Aug 03, 2015
Binary Black Hole Mergers from Globular Clusters: Implications for Advanced LIGO
Author(s): Carl L. Rodriguez, Meagan Morscher, Bharath Pattabiraman, Sourav Chatterjee, Carl-Johan Haster, and Frederic A. RasioMergers of binary black holes from dense star clusters may be promising sources of gravitational waves.[Phys. Rev. Lett. 115…
Interaction of Strain and Nuclear Spins in Silicon: Quadrupolar Effects on Ionized Donors
Author(s): David P. Franke, Florian M. Hrubesch, Markus Künzl, Hans-Werner Becker, Kohei M. Itoh, Martin Stutzmann, Felix Hoehne, Lukas Dreher, and Martin S. Brandt
The interaction between the nuclear quadrupole moment of Arsenic and an electric field gradient can be manipulated by applying an elastic strain to the host silicon crystal. This technique could allow for mechanical tuning of qubits.
[Phys. Rev. Lett. 115, 057601] Published Wed Jul 29, 2015
Wide-Field Lensing Mass Maps from Dark Energy Survey Science Verification Data
Author(s): C. Chang et al.The Dark Energy Survey has generated a map of invisible dark matter by observing tiny gravitationally induced distortions in the images of distant galaxies.[Phys. Rev. Lett. 115, 051301] Published Wed Jul 29, 2015
Resolving the Tevatron Top Quark Forward-Backward Asymmetry Puzzle: Fully Differential Next-to-Next-to-Leading-Order Calculation
Author(s): Michal Czakon, Paul Fiedler, and Alexander Mitov
Fully differential two loop calculations in the Standard Model explain the excess of top quarks in the direction of the proton beam in pp¯ collisions at the Tevatron collider.
[Phys. Rev. Lett. 115, 052001] Published Tue Jul 28, 2015
Control of Optical Transitions with Magnetic Fields in Weakly Bound Molecules
Author(s): B. H. McGuyer, M. McDonald, G. Z. Iwata, W. Skomorowski, R. Moszynski, and T. Zelevinsky
Magnetic fields can be used to make a normally forbidden molecular transition accessible to optical excitation, using much lower fields than would be needed to achieve the same with the constituent atoms.
[Phys. Rev. Lett. 115, 053001] Published Tue Jul 28, 2015
Negative Differential Conductivity in an Interacting Quantum Gas
Author(s): Ralf Labouvie, Bodhaditya Santra, Simon Heun, Sandro Wimberger, and Herwig OttRubidium atoms in an optical trap have been made to exhibit negative differential conductance, a phenomenon normally found in semiconductor diodes.[Phys. Rev. Lett…
Atom-Light Hybrid Interferometer
Author(s): Bing Chen, Cheng Qiu, Shuying Chen, Jinxian Guo, L. Q. Chen, Z. Y. Ou, and Weiping Zhang
A new type of interferometer, sensitive to the phases of an atomic spin wave and a light wave is experimentally demonstrated.
[Phys. Rev. Lett. 115, 043602] Published Fri Jul 24, 2015
Drag Moderation by the Melting of an Ice Surface in Contact with Water
Author(s): Ivan U. Vakarelski, Derek Y. C. Chan, and Sigurdur T. Thoroddsen
An ice coating can halve the drag of an object moving in water by reducing the turbulent wake behind it.
[Phys. Rev. Lett. 115, 044501] Published Fri Jul 24, 2015
Coherent Addressing of Individual Neutral Atoms in a 3D Optical Lattice
Author(s): Yang Wang, Xianli Zhang, Theodore A. Corcovilos, Aishwarya Kumar, and David S. WeissResearchers manipulate atomic qubits individually in a three-dimensional optical lattice.[Phys. Rev. Lett. 115, 043003] Published Thu Jul 23, 2015
Temperature-Dependent Three-Dimensional Anisotropy of the Magnetoresistance in WTe_{2}
Author(s): L. R. Thoutam, Y. L. Wang, Z. L. Xiao, S. Das, A. Luican-Mayer, R. Divan, G. W. Crabtree, and W. K. Kwok
Tungsten-ditelluride cleaves easily into atomically thin layers, but its electrons conduct almost isotropically, suggesting a rare case of good charge conduction across weak mechanical bonds.
[Phys. Rev. Lett. 115, 046602] Published Wed Jul 22, 2015
Discontinuous Buckling of Wide Beams and Metabeams
Author(s): Corentin Coulais, Johannes T. B. Overvelde, Luuk A. Lubbers, Katia Bertoldi, and Martin van Hecke
The buckling of mechanical beams under a compressive force can be tuned by adding holes into the beam.
[Phys. Rev. Lett. 115, 044301] Published Tue Jul 21, 2015
Experimental Satellite Quantum Communications
Author(s): Giuseppe Vallone, Davide Bacco, Daniele Dequal, Simone Gaiarin, Vincenza Luceri, Giuseppe Bianco, and Paolo VilloresiFragile photon states useful for quantum communication can be faithfully transmitted and distinguished over a link between a…
Thermal Conductivity through the Quantum Critical Point in YbRh_{2} Si_{2} at Very Low Temperature
Author(s): M. Taupin, G. Knebel, T. D. Matsuda, G. Lapertot, Y. Machida, K. Izawa, J.-P. Brison, and J. Flouquet
Experiments with heavy-fermion materials show that quasiparticles exist at the critical point of a quantum phase transition.
[Phys. Rev. Lett. 115, 046402] Published Mon Jul 20, 2015
Thin Films in Partial Wetting: Internal Selection of Contact-Line Dynamics
Author(s): Amir Alizadeh Pahlavan, Luis Cueto-Felgueroso, Gareth H. McKinley, and Ruben JuanesA classic problem of a spreading puddle might be solved by incorporating intermolecular forces between the liquid and the solid underneath.[Phys. Rev. Lett. 1…
Coupling Ferroelectricity with Spin-Valley Physics in Oxide-Based Heterostructures
Author(s): Kunihiko Yamauchi, Paolo Barone, Tatsuya Shishidou, Tamio Oguchi, and Silvia PicozziA theoretically proposed oxide-based heterostructure indicates how coupling of spin and valley degrees of freedom may be engineered and controlled via the fe…
Evidence of Wγγ Production in pp Collisions at sqrt[s] =8 TeV and Limits on Anomalous Quartic Gauge Couplings with the ATLAS Detector
Author(s): G. Aad et al. (ATLAS Collaboration)The first measurement of triple gauge boson production (W boson and two photons) at the LHC provides new limits on interactions beyond the standard model.[Phys. Rev. Lett. 115, 031802] Published Thu Jul 16,…
Physical Limit to Concentration Sensing Amid Spurious Ligands
Author(s): Thierry MoraThe accuracy with which a cell can sense a specific ligand is limited by the concentration of incorrect ligands that can bind to and interfere with the cell receptors.[Phys. Rev. Lett. 115, 038102] Published Wed Jul 15, 2015
THz-Pulse-Induced Selective Catalytic CO Oxidation on Ru
Author(s): Jerry L. LaRue, Tetsuo Katayama, Aaron Lindenberg, Alan S. Fisher, Henrik Öström, Anders Nilsson, and Hirohito Ogasawara
Terahertz pulses drive certain reactions on a metal surface by selectively exciting some of the adsorbed molecules.
[Phys. Rev. Lett. 115, 036103] Published Wed Jul 15, 2015
Dzyaloshinskii-Moriya Interaction and Hall Effects in the Skyrmion Phase of Mn_{1−x} Fe_{x} Ge
Author(s): J. Gayles, F. Freimuth, T. Schena, G. Lani, P. Mavropoulos, R. A. Duine, S. Blügel, J. Sinova, and Y. Mokrousov
A new theoretical treatment of Skyrmions in ferromagnets shows that electron dynamics are governed by Berry phase physics.
[Phys. Rev. Lett. 115, 036602] Published Tue Jul 14, 2015
Density-Functional Theory for Strongly Correlated Bosonic and Fermionic Ultracold Dipolar and Ionic Gases
Author(s): F. Malet, A. Mirtschink, C. B. Mendl, J. Bjerlin, E. Ö. Karabulut, S. M. Reimann, and Paola Gori-Giorgi
An alternative functional for DFT calculations enables simulations of ultracold gases with long-ranged interactions.
[Phys. Rev. Lett. 115, 033006] Published Tue Jul 14, 2015
Spatially Resolved Detection of a Spin-Entanglement Wave in a Bose-Hubbard Chain
Author(s): Takeshi Fukuhara, Sebastian Hild, Johannes Zeiher, Peter Schauß, Immanuel Bloch, Manuel Endres, and Christian Gross
A quantum microscope images a propagating wave of entanglement between atoms trapped in an optical lattice.
[Phys. Rev. Lett. 115, 035302] Published Mon Jul 13, 2015
Electronic Magnetization of a Quantum Point Contact Measured by Nuclear Magnetic Resonance
Author(s): Minoru Kawamura, Keiji Ono, Peter Stano, Kimitoshi Kono, and Tomosuke AonoNuclear magnetic moments inside a quantum point contact (QPC) can be polarized by a DC current. This polarization influences the QPC conductance at 0.7*2e2/h, where a …
Experimental Test of Entropic Noise-Disturbance Uncertainty Relations for Spin-1/2 Measurements
Author(s): Georg Sulyok, Stephan Sponar, Bülent Demirel, Francesco Buscemi, Michael J. W. Hall, Masanao Ozawa, and Yuji Hasegawa
Experiments on neutrons confirm an information-theoretic formulation of Heisenberg’s noise-disturbance uncertainty principle: There is a reciprocal trade-off in knowledge of two incompatible spin observables.
[Phys. Rev. Lett. 115, 030401] Published Mon Jul 13, 2015
High Gain Submicrometer Optical Amplifier at Near-Infrared Communication Band
Author(s): Xiaoxia Wang, Xiujuan Zhuang, Sen Yang, Yu Chen, Qinglin Zhang, Xiaoli Zhu, Hong Zhou, Pengfei Guo, Junwu Liang, Yu Huang, Anlian Pan, and Xiangfeng DuanResearchers have demonstrated an amplifier for near-infrared light that is 20 times more…
Craters and Granular Jets Generated by Underground Cavity Collapse
Author(s): F. E. Loranca-Ramos, J. L. Carrillo-Estrada, and F. Pacheco-Vázquez
Planetary craters that form from a collapsing cavity have features distinct from those formed by a large object’s impact, according to experiments.
[Phys. Rev. Lett. 115, 028001] Published Thu Jul 09, 2015
Optically Induced Nuclear Spin Polarization in the Quantum Hall Regime: The Effect of Electron Spin Polarization through Exciton and Trion Excitations
Author(s): K. Akiba, S. Kanasugi, T. Yuge, K. Nagase, and Y. HirayamaThe nuclear spins of Gallium and Arsenic are manipulated optically, providing an alternative to traditional qubits for quantum information processing.[Phys. Rev. Lett. 115, 026804] Pu…
Turning Bacteria Suspensions into Superfluids
Author(s): Héctor Matías López, Jérémie Gachelin, Carine Douarche, Harold Auradou, and Eric Clément
Self-propelling bacteria can reduce the viscosity of a fluid to zero through a collective organization of their swimming.
[Phys. Rev. Lett. 115, 028301] Published Tue Jul 07, 2015
Metasurface-Enabled Remote Quantum Interference
Author(s): Pankaj K. Jha, Xingjie Ni, Chihhui Wu, Yuan Wang, and Xiang ZhangA proposed metasurface made of tiny gold antennas could act as either a flat mirror or a concave, focusing mirror, depending on the radiation pattern of the source, which could…
Hybrid Matter-Wave–Microwave Solitons Produced by the Local-Field Effect
Author(s): Jieli Qin, Guangjiong Dong, and Boris A. MalomedA new species of matter-wave-microwave solitons is predicted in the ground state of a spinor gas. The state is a result of short-range attractive interactions between spinors, and long-range, g…
Fullerene C_{60} Simulated with a Superconducting Microwave Resonator and Test of the Atiyah-Singer Index Theorem
Author(s): B. Dietz, T. Klaus, M. Miski-Oglu, A. Richter, M. Bischoff, L. von Smekal, and J. WambachA centimeter sized superconducting buckyball made from lead and brass is used to simulate the spectral properties of C60.[Phys. Rev. Lett. 115, 026801] …
Quantum Signature of Analog Hawking Radiation in Momentum Space
Author(s): D. Boiron, A. Fabbri, P.-É. Larré, N. Pavloff, C. I. Westbrook, and P. Ziń
Momentum correlations across the acoustic analog of a black hole in a Bose-Einstein condensate could be used to demonstate the quantum nature of Hawking radiation.
[Phys. Rev. Lett. 115, 025301] Published Mon Jul 06, 2015
Scanning Quantum Dot Microscopy
Author(s): Christian Wagner, Matthew F. B. Green, Philipp Leinen, Thorsten Deilmann, Peter Krüger, Michael Rohlfing, Ruslan Temirov, and F. Stefan Tautz
A new scanning probe technique provides increased sensitivity to the electrostatic potential surrounding a single atom or molecule.
[Phys. Rev. Lett. 115, 026101] Published Mon Jul 06, 2015
Direct Evidence of Flexomagnetoelectric Effect Revealed by Single-Molecule Spectroscopy
Author(s): I. S. Veshchunov, S. V. Mironov, W. Magrini, V. S. Stolyarov, A. N. Rossolenko, V. A. Skidanov, J.-B. Trebbia, A. I. Buzdin, Ph. Tamarat, and B. Lounis
Single molecule spectroscopy provides direct experimental evidence for electric polarization induced by magnetization inhomogeneities in an iron garnet film.
[Phys. Rev. Lett. 115, 027601] Published Mon Jul 06, 2015
Shear Viscosity of a Unitary Fermi Gas Near the Superfluid Phase Transition
Author(s): J. A. Joseph, E. Elliott, and J. E. Thomas
Measurements of a Fermi gas below the superfluid transition temperature provide the first determination of the local shear viscosity, revealing features that were hidden in previous trap-averaged measurements.
[Phys. Rev. Lett. 115, 020401] Published Mon Jul 06, 2015
Visualizing Pure Quantum Turbulence in Superfluid ^{3} He: Andreev Reflection and its Spectral Properties
Author(s): A. W. Baggaley, V. Tsepelin, C. F. Barenghi, S. N. Fisher, G. R. Pickett, Y. A. Sergeev, and N. Suramlishvili
Quantum turbulence in superfluid 3He is probed at length scales smaller than the average inter-vortex separation using the Andreev reflection of quasiparticle excitations.
[Phys. Rev. Lett. 115, 015302] Published Thu Jul 02, 2015
Shifting the Voltage Drop in Electron Transport Through a Single Molecule
Author(s): Sujoy Karan, David Jacob, Michael Karolak, Christian Hamann, Yongfeng Wang, Alexander Weismann, Alexander I. Lichtenstein, and Richard BerndtSmall changes in the configuration of a molecule can significantly influence its resistive behavior …
Accelerating Self-Imaging: The Airy-Talbot Effect
Author(s): Yaakov Lumer, Lee Drori, Yoav Hazan, and Mordechai SegevThe Talbot effect, where an optical field reproduces itself at constant intervals along a straight propgation line, has been demonstrated along a bent trajectory.[Phys. Rev. Lett. 115, …
Tuning the Liquid-Liquid Transition by Modulating the Hydrogen-Bond Angular Flexibility in a Model for Water
Author(s): Frank Smallenburg and Francesco SciortinoA liquid-liquid transition with no intervening ice stage is predicted in supercooled water when the hydrogen bond flexibility is tuned.[Phys. Rev. Lett. 115, 015701] Published Wed Jul 01, 2015
Observation of the Berezinskii-Kosterlitz-Thouless Phase Transition in an Ultracold Fermi Gas
Author(s): P. A. Murthy, I. Boettcher, L. Bayha, M. Holzmann, D. Kedar, M. Neidig, M. G. Ries, A. N. Wenz, G. Zürn, and S. Jochim
Experiments with cold atoms explore the low temperature superfluid phase transition of paired fermions in two dimensions.
[Phys. Rev. Lett. 115, 010401] Published Tue Jun 30, 2015
Search for Ultralight Scalar Dark Matter with Atomic Spectroscopy
Author(s): Ken Van Tilburg, Nathan Leefer, Lykourgos Bougas, and Dmitry BudkerScientists have now enlisted atomic spectroscopy in the hunt for dark matter.[Phys. Rev. Lett. 115, 011802] Published Tue Jun 30, 2015
Photoemission Circular Dichroism and Spin Polarization of the Topological Surface States in Ultrathin Bi_{2} Te_{3} Films
Author(s): C.-Z. Xu, Y. Liu, R. Yukawa, L.-X. Zhang, I. Matsuda, T. Miller, and T.-C. ChiangThe complex behavior of photoemission in topological insulators is a result of quantum interference involving three photoemission channels according to abinitio…
Evidence for Collective Multiparticle Correlations in p−Pb Collisions
Author(s): V. Khachatryan et al. (CMS Collaboration)The plasma of quarks and gluons that forms when a proton collides with a lead nucleus has unexpected liquid-like properties.[Phys. Rev. Lett. 115, 012301] Published Mon Jun 29, 2015
Alpha Heating and Burning Plasmas in Inertial Confinement Fusion
Author(s): R. Betti, A. R. Christopherson, B. K. Spears, R. Nora, A. Bose, J. Howard, K. M. Woo, M. J. Edwards, and J. Sanz
Alpha particles would need to provide 50 kJ of heating to achieve a burning plasma regime – where more energy is released by the fusion reactions than is absorbed by the fuel – at the National Ignition Facility.
[Phys. Rev. Lett. 114, 255003] Published Fri Jun 26, 2015
Observation of Charge Asymmetry Dependence of Pion Elliptic Flow and the Possible Chiral Magnetic Wave in Heavy-Ion Collisions
Author(s): L. Adamczyk et al. (STAR Collaboration)A possible signature of chiral symmetry restoration, in the form of a chiral magnetic wave in the quark-gluon plasma, has been observed in heavy-ion collisions at RHIC.[Phys. Rev. Lett. 114, 252302] Pub…
Connecting Berezinskii-Kosterlitz-Thouless and BEC Phase Transitions by Tuning Interactions in a Trapped Gas
Author(s): Richard J. Fletcher, Martin Robert-de-Saint-Vincent, Jay Man, Nir Navon, Robert P. Smith, Konrad G. H. Viebahn, and Zoran Hadzibabic
A harmonically trapped atomic gas can transition from a BKT superfluid to a Bose-Einstein condensate by reducing the interaction strength between the atoms.
[Phys. Rev. Lett. 114, 255302] Published Fri Jun 26, 2015
Ultrahigh-Energy Debris from the Collisional Penrose Process
Author(s): Emanuele Berti, Richard Brito, and Vitor CardosoParticles orbiting near a spinning black hole might collide and get ejected with much more energy than previous calculations showed.[Phys. Rev. Lett. 114, 251103] Published Fri Jun 26, 2015
Gapped Surface States in a Strong-Topological-Insulator Material
Author(s): A. P. Weber, Q. D. Gibson, Huiwen Ji, A. N. Caruso, A. V. Fedorov, R. J. Cava, and T. Valla
Topological-crystalline-insulators and strong-topological-insulator phases of matter can be present in a single system. This is demonstrated using photoelectron spectroscopy measurements and band structure calculations.
[Phys. Rev. Lett. 114, 256401] Published Tue Jun 23, 2015
Laser-Frequency Stabilization Based on Steady-State Spectral-Hole Burning in Eu^{3+}∶Y_{2}SiO_{5}
Author(s): Shon Cook, Till Rosenband, and David R. LeibrandtCrystals doped with rare-earth ions, and cooled to 4 K, can be optically pumped so that they are transparent over narrow frequency ranges. Using these crystals as spectral windows could allow …
Electron-Phonon Interactions, Metal-Insulator Transitions, and Holographic Massive Gravity
Author(s): Matteo Baggioli and Oriol Pujolàs
A quantum gravity holographic model can describe strongly correlated systems, in particular polaron quasiparticles, predicting a metal-insulator transition.
[Phys. Rev. Lett. 114, 251602] Published Tue Jun 23, 2015
Microwave Chip-Based Beam Splitter for Low-Energy Guided Electrons
Author(s): Jakob Hammer, Sebastian Thomas, Philipp Weber, and Peter HommelhoffA new electron beam splitter that fits on a millimeter-sized chip could allow quantum optics experiments with free electrons.[Phys. Rev. Lett. 114, 254801] Published Tue Jun …
Braiding a Flock: Winding Statistics of Interacting Flying Spins
Author(s): Jean-Baptiste Caussin and Denis BartoloIndividual birds flying in a flock do not fly in straight lines, but weave in and out of each other. Topological invariant braiding statistics shows that this weaving has a coherent rotation: the birds …
Imaging Molecular Motion: Femtosecond X-Ray Scattering of an Electrocyclic Chemical Reaction
Author(s): M. P. Minitti, J. M. Budarz, A. Kirrander, J. S. Robinson, D. Ratner, T. J. Lane, D. Zhu, J. M. Glownia, M. Kozina, H. T. Lemke, M. Sikorski, Y. Feng, S. Nelson, K. Saita, B. Stankus, T. Northey, J. B. Hastings, and P. M. Weber
Femtosecond x-ray pulses image structural changes in a molecule.
[Phys. Rev. Lett. 114, 255501] Published Mon Jun 22, 2015
Accurate Extraction of Electrostatic Force by a Voltage-Pulse Force Spectroscopy
Author(s): Eiichi Inami and Yoshiaki SugimotoA new technique in atomic force microscopy more accurately measures the electrostatic force between the probe and the surface.[Phys. Rev. Lett. 114, 246102] Published Fri Jun 19, 2015
Engineering a Spin-Orbital Magnetic Insulator by Tailoring Superlattices
Author(s): J. Matsuno, K. Ihara, S. Yamamura, H. Wadati, K. Ishii, V. V. Shankar, Hae-Young Kee, and H. Takagi
The magnetic ordering temperature of complex iridates decreases as SrTiO3 spacer layers are inserted between perovskite SrIrO3 layers. At a crticial number of spacers the material transitions from an insulator to a semimetal.
[Phys. Rev. Lett. 114, 247209] Published Thu Jun 18, 2015
Rydberg Electrons in a Bose-Einstein Condensate
Author(s): Jia Wang, Marko Gacesa, and R. Côté
Atoms in a condensate could be used to image the quantum wave function of an impurity charge.
[Phys. Rev. Lett. 114, 243003] Published Thu Jun 18, 2015
Optical Polarization of Nuclear Spins in Silicon Carbide
Author(s): Abram L. Falk, Paul V. Klimov, Viktor Ivády, Krisztián Szász, David J. Christle, William F. Koehl, Ádám Gali, and David D. Awschalom
An optical technique polarizes the spin of nuclei in silicon carbide, offering a potential new route to nuclear spin-based quantum memory.
[Phys. Rev. Lett. 114, 247603] Published Wed Jun 17, 2015
Identification of Patient Zero in Static and Temporal Networks: Robustness and Limitations
Author(s): Nino Antulov-Fantulin, Alen Lančić, Tomislav Šmuc, Hrvoje Štefančić, and Mile Šikić
A new model could help narrow down the source of a disease outbreak.
[Phys. Rev. Lett. 114, 248701] Published Tue Jun 16, 2015
Particle Dark Matter Searches Outside the Local Group
Author(s): Marco Regis, Jun-Qing Xia, Alessandro Cuoco, Enzo Branchini, Nicolao Fornengo, and Matteo Viel
The most sensitive limits on dark matter annihilation rate could be obtained by cross-correlating γ-ray emission from dark matter with their gravitational fingerprint in the distribution of low redshift galaxies.
[Phys. Rev. Lett. 114, 241301] Published Tue Jun 16, 2015
Strong Asymmetric Charge Carrier Dependence in Inelastic Electron Tunneling Spectroscopy of Graphene Phonons
Author(s): Fabian D. Natterer, Yue Zhao, Jonathan Wyrick, Yang-Hao Chan, Wen-Ying Ruan, Mei-Yin Chou, Kenji Watanabe, Takashi Taniguchi, Nikolai B. Zhitenev, and Joseph A. StroscioInelastic electron tunneling spectroscopy has mapped the phonon density …
Observation of Localized States in Lieb Photonic Lattices
Author(s): Rodrigo A. Vicencio, Camilo Cantillano, Luis Morales-Inostroza, Bastián Real, Cristian Mejía-Cortés, Steffen Weimann, Alexander Szameit, and Mario I. Molina
Strong confinement of light in crystalline structures known as Lieb lattices opens up routes to developing new light-trapping schemes.
[Phys. Rev. Lett. 114, 245503] Published Mon Jun 15, 2015
Observation of a Localized Flat-Band State in a Photonic Lieb Lattice
Author(s): Sebabrata Mukherjee, Alexander Spracklen, Debaditya Choudhury, Nathan Goldman, Patrik Öhberg, Erika Andersson, and Robert R. Thomson
Strong confinement of light in crystalline structures known as Lieb lattices opens up routes to developing new light-trapping schemes.
[Phys. Rev. Lett. 114, 245504] Published Mon Jun 15, 2015
Ultrasensitive Ultrafast Vibrational Spectroscopy Employing the Near Field of Gold Nanoantennas
Author(s): O. Selig, R. Siffels, and Y. L. A. Rezus
Micrometer-scale antennas made from gold may give chemists a peek into the dynamics of molecular bonds.
[Phys. Rev. Lett. 114, 233004] Published Fri Jun 12, 2015
Position-Momentum Duality and Fractional Quantum Hall Effect in Chern Insulators
Author(s): Martin Claassen, Ching Hua Lee, Ronny Thomale, Xiao-Liang Qi, and Thomas P. DevereauxA first-quantized description of fractional Chern insulators is developed using the approach commonly employed in the quantum Hall effect.[Phys. Rev. Lett. …
Disentangling the Free-Fall Arch Paradox in Silo Discharge
Author(s): S. M. Rubio-Largo, A. Janda, D. Maza, I. Zuriguel, and R. C. Hidalgo
The flow rate of grains from a silo depends on the stress field above the outlet and not on the free fall of grains from the bottom of the packed surface as had been previously thought.
[Phys. Rev. Lett. 114, 238002] Published Thu Jun 11, 2015
Pauli-Heisenberg Oscillations in Electron Quantum Transport
Author(s): Karl Thibault, Julien Gabelli, Christian Lupien, and Bertrand ReuletTemporal correlations between electrons reveal that electrons crossing a conductor at low temperature cross it at a regular pace h/eV with a jitter h/kBT, thus providing a s…
Splitting of the Fermi Contour of Quasi-2D Electrons in Parallel Magnetic Fields
Author(s): M. A. Mueed, D. Kamburov, M. Shayegan, L. N. Pfeiffer, K. W. West, K. W. Baldwin, and R. Winkler
The two-dimensional Fermi surface for electrons confined in gallium arsenide quantum wells evolves, distorts and eventually splits in two from the presence of a strong in-plane magnetic field.
[Phys. Rev. Lett. 114, 236404] Published Thu Jun 11, 2015