http://prl.aps.org/ Accepted Papers for Physical Review Letters hourly 1 2013-05-20T21:07:09-04:00 rss@aps.org assocpub@aps.org 2013-05-20T21:07:09-04:00 en Copyright © 2013 the American Physical Society. Personal use only, all commercial or other reuse prohibited Copyright © 2013 the American Physical Society assocpub@aps.org http://prl.aps.org/accepted/L/34076Y9eMe21c93652c205b05559a149407cd411f We measure photoelectron angular distributions of noble gases in intense elliptically polarized laser fields, which indicate strong structure-dependent Coulomb asymmetry. Using a dedicated semiclassical model, we have disentangled the contribution of direct ionization and multiple forward scattering... Subcycle dynamics of Coulomb asymmetry in strong elliptical laser fields 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/34076Y9eMe21c93652c205b05559a149407cd411f Atomic, Molecular, and Optical Physics Atomic, Molecular, and Optical Physics http://prl.aps.org/accepted/L/f7079YabGa014a3e619b7d37d20c6d8acb26fc12c {\it In situ} micro-four-point probe conductivity measurements in ultrahigh vacuum revealed that the Si(111)-striped incommensurate (SIC)-Pb surface showed the superconductivity transition at 1.1~K. Both of the hexagonal and rectangular phases of Si(111)$\sqrt{7}\times\sqrt{3}$-In surface showed sup... Magnetoresistance measurements of a superconducting surface state of In-induced and Pb-induced structures on Si(111) 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/f7079YabGa014a3e619b7d37d20c6d8acb26fc12c Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. http://prl.aps.org/accepted/L/15070YacMe815a3dc56c441426c3c155a4bcac66e We demonstrate an organic molecule with an energy gap between its singlet and triplet excited states of almost zero (��EST~0 eV). Such separation was realized through proper combination of an electron-donating indolocarbazole group and a diphenyltriazine electron-accepting moiety. Calculated and mea... Organic luminescent molecule with energetically equivalent singlet and triplet excited states for organic light-emitting diodes 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/15070YacMe815a3dc56c441426c3c155a4bcac66e Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. http://prl.aps.org/accepted/L/6907dYfaKaa1723f73a97507821ecbd32edcc90ec We study the low energy states of Kondo alloys as function of the magnetic impurity concentration per site, $x$, and the conduction electron average site occupation, $n_c$. Using two complementary approaches, the mean-field coherent potential approximation and the strong coupling limit, we identify ... Lifshitz transition in Kondo alloys 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/6907dYfaKaa1723f73a97507821ecbd32edcc90ec Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. http://prl.aps.org/accepted/L/44074Y88O9f14f3e24d373d5bfb7ae3238b824709 Chimera states occur spontaneously in populations of coupled photosensitive chemical oscillators. Experiments and simulations are carried out on nonlocally coupled oscillators, with the coupling strength decreasing exponentially with distance. Chimera states with synchronized oscillators, phase wave... Chimera states in populations of nonlocally coupled chemical oscillators 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/44074Y88O9f14f3e24d373d5bfb7ae3238b824709 Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc. Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc. http://prl.aps.org/accepted/L/86076Yf7Pf012f4bc3412f4840fdf373745111bb2 We show that density perturbations seeded by the inflaton can be suppressed when having additional light degrees of freedom contributing to the production of perturbations. The inflaton fluctuations affect the light field dynamics by modulating the length of the inflationary period, hence produce ad... Large tensor-to-scalar ratio in small-field inflation 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/86076Yf7Pf012f4bc3412f4840fdf373745111bb2 Gravitation and Astrophysics Gravitation and Astrophysics http://prl.aps.org/accepted/L/e8077YadQ9a1e84893f770c14ebfc8e54884b3b5f Models where the baryon ($B$) and lepton ($L$) numbers are local gauge symmetries that are spontaneously broken at a low scale are revisited. We find new extensions of the Standard Model which predict the existence of fermions that carry both baryon and lepton numbers (i.e., leptoquarks). The local ... Gauge theory for baryon and lepton numbers with leptoquarks 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/e8077YadQ9a1e84893f770c14ebfc8e54884b3b5f Elementary Particles and Fields Elementary Particles and Fields http://prl.aps.org/accepted/L/2f070Yc6O4619231d6b9558987793fe0b54f2d130 Using the joint distribution for proper time-delays of a chaotic cavity derived by Brouwer, Frahm & Beenakker [Phys. Rev. Lett. 78, 4737 (1997)], we obtain, in the limit of large number of channels \Nc, the large deviation function for the distribution of the Wigner time-delay (the sum of proper... Wigner time-delay distribution in chaotic cavities and freezing transition 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/2f070Yc6O4619231d6b9558987793fe0b54f2d130 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://prl.aps.org/accepted/L/1e075Y50N741434140bd59744bdbb9142185b1bcf We study the effect of spatial heterogeneity on the collective motion of self-propelled particles (SPPs). The heterogeneity is modeled as a random distribution of either static or diffusive obstacles, which the SPPs avoid while trying to align their movements. We find that such obstacles have a dram... Optimal noise maximizes collective motion in heterogeneous media 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/1e075Y50N741434140bd59744bdbb9142185b1bcf Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://prl.aps.org/accepted/L/f3073Y58P401cf4c87041c55a44c6ad2441637d70 The problem of glass relaxation under ambient conditions has intrigued scientists and the general public for centuries, most notably in the legend of flowing cathedral glass windows. Here we report quantitative measurement of glass relaxation at room temperature. We find that Corning�� Gorilla�� Gla... Dynamics of glass relaxation at room temperature 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/f3073Y58P401cf4c87041c55a44c6ad2441637d70 Condensed Matter: Structure, etc. Condensed Matter: Structure, etc. http://prl.aps.org/accepted/L/3907cYaaO8114b3dc9632e846806e42edb238d1a9 { We investigate using first-principles calculations the atomic structure of the orthorhombic phase of Ta$_2$O$_5$. Although this structure has been studied for decades, the correct structural model is controversial owing to the complication of structural disorder. We identify a new low-energy high-... Hidden structural order in orthorhombic Ta$_2$O$_5$ 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/3907cYaaO8114b3dc9632e846806e42edb238d1a9 Condensed Matter: Structure, etc. Condensed Matter: Structure, etc. http://prl.aps.org/accepted/L/a8077Yc0O8f11437764210d94884bb4f155444e11 Quasielastic neutron scattering of H$_2$ and D$_2$ in the same nanoporous carbon at 10-40 K demonstrates extreme quantum sieving, with D$_2$ diffusing up to 76 times faster. D$_2$ also shows liquid-like diffusion while H$_2$ exhibits Chudley-Elliott jump diffusion, evidence of their different relati... Isotope effect on adsorbed quantum phases: Diffusion of H$_2$ and D$_2$ in nanoporous carbon 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/a8077Yc0O8f11437764210d94884bb4f155444e11 Condensed Matter: Structure, etc. Condensed Matter: Structure, etc. http://prl.aps.org/accepted/L/3f070Y37M7a1003ff5a406b3682fb86122bc26bd4 The plasticity of micron-scale Cu and Au wires under cyclic torsion is investigated for the first time using a torsion balance technique. In addition to a size effect, a distinct Bauschinger effect and an anomalous plastic recovery, wherein reverse plasticity even occurs upon unloading, are unambigu... Anomalous plasticity in the cyclic torsion of micron scale metallic wires 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/3f070Y37M7a1003ff5a406b3682fb86122bc26bd4 Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc. Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc. http://prl.aps.org/accepted/L/c107aYfdJa51e03aa1809565aac6e48aa4457516b A simple model of DNA based on two interacting polymers has been used to study the unzipping of a double stranded DNA subjected to a periodic force. We propose a dynamical transition, where without changing the physiological condition, it is possible to bring DNA from the zipped/unzipped state to a ... Statistical mechanics of DNA unzipping under periodic force: Scaling behavior of hysteresis loop 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/c107aYfdJa51e03aa1809565aac6e48aa4457516b Soft Matter, Biological, and Interdisciplinary Physics Soft Matter, Biological, and Interdisciplinary Physics http://prl.aps.org/accepted/L/c2075Y66O641a53d27e10f615d0149cea57d8629a \textbf{Abstract}: Strong mitigation of Edge-Localized-Modes (ELMs) has been observed on EAST, when Lower Hybrid Wave (LHW) is applied to H-mode plasmas with Ion Cyclotron Resonant Heating (ICRH). This has been demonstrated to be due to the formation of Helical Current Filaments (HCFs) flowing along... Magnetic topology changes induced by lower hybrid waves and their profound effect on edge-localized modes in the EAST tokamak 2013-05-15T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/c2075Y66O641a53d27e10f615d0149cea57d8629a Plasma and Beam Physics Plasma and Beam Physics http://prl.aps.org/accepted/L/97070Ya8M3e1bc3524858a09b0d3364fe1e18c8a6 The dynamic interaction of scroll waves in the Belousov-Zhabotinsky reaction with a vertically orientated gradient of excitability is studied by optical tomography. This study focuses on scroll waves, whose filaments were oriented almost perpendicular to the gradient. Whereas scroll waves with filam... Twists of opposite handedness on a scroll wave 2013-05-14T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/97070Ya8M3e1bc3524858a09b0d3364fe1e18c8a6 Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc. Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc. http://prl.aps.org/accepted/L/f4072Y93I5e1622387fe7536ef9dc157261fe7826 Oxygen vacancies on ceria surfaces play a crucial role in catalytic applications, yet whether vacancies are at surface or subsurface sites on reduced CeO$_2$(111), and whether vacancies agglomerate or repel each other, is still under discussion, with few and inconsistent experimental results. By com... Evidence for sub-surface ordering of oxygen vacancies on the reduced CeO$_{2}$(111) surface using density-functional and statistical calculations 2013-05-14T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/f4072Y93I5e1622387fe7536ef9dc157261fe7826 Condensed Matter: Structure, etc. Condensed Matter: Structure, etc. http://prl.aps.org/accepted/L/c4073Yf3M661bc3d34624827f05e96e4932247041 \noindent We demonstrate a novel method for supercontinuum generation in an optical fiber based on two-color pumping with a time delay and a group velocity matching. The scheme relies on the enhanced cross-phase modulation at an intensity induced refractive index barrier between a dispersive wave an... Compressible octave spanning supercontinuum generation by two-pulse collisions 2013-05-14T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/c4073Yf3M661bc3d34624827f05e96e4932247041 Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc. Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc. http://prl.aps.org/accepted/L/0b076Yb8RcaRf91d309c4270a181f62dba8ce68fc Erratum: Magnetic dipole moment of the doubly-closed-shell plus one proton nucleus $^{\rm 49}$Sc [Phys. Rev. Lett. \textbf{109}, 032504 (2012)] 2013-05-14T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/0b076Yb8RcaRf91d309c4270a181f62dba8ce68fc Errata Errata http://prl.aps.org/accepted/L/08073Y39Mdf11a3584bd6595ce7ad6c088937333e We determine the steady-state phases of a driven-dissipative Bose-Hubbard model, describing, e.g., an array of coherently pumped nonlinear cavities with a finite photon lifetime. Within a mean-field master equation approach using exact quantum solutions for the one-site problem, we show that the sys... Steady-state phases and tunneling-induced instabilities in the driven dissipative Bose-Hubbard model 2013-05-14T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/08073Y39Mdf11a3584bd6595ce7ad6c088937333e Atomic, Molecular, and Optical Physics Atomic, Molecular, and Optical Physics http://prl.aps.org/accepted/L/c2077Y74Nd21d03966bc2e94d7cd2090183e9a23e The crystal and magnetic structures of single-crystalline hexagonal LuFeO$_3$ films have been studied using x-ray, electron and neutron diffraction methods. The polar structure of these films are found to persist up to 1050 K; and the switchability of the polar behavior is observed at room temperatu... Room-temperature multiferroic hexagonal LuFeO$_3$ films 2013-05-14T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/c2077Y74Nd21d03966bc2e94d7cd2090183e9a23e Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. http://prl.aps.org/accepted/L/b007cYb4M2b1c022a9e26b61802bb0e22ddaa29c8 Computational searches for stable and metastable structures of water ice and other H:O compositions at TPa pressures have led us to predict that H$_2$O decomposes into H$_2$O$_2$ and a hydrogen-rich phase at pressures of a little over 5 TPa. The hydrogen-rich phase is stable over a wide range of hyd... Decomposition and terapascal phases of water ice 2013-05-14T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/b007cYb4M2b1c022a9e26b61802bb0e22ddaa29c8 Condensed Matter: Structure, etc. Condensed Matter: Structure, etc. http://prl.aps.org/accepted/L/a707cY1bH5f1403265681164be9575a3fec5d30cd We report the spin structure of an exchange-biased ferromagnetic oxide heterostructure, La0.67Sr0.33MnO3 / SrRuO3, through magnetization and polarized neutron reflectometry measurements. We reveal that the magnetization reversal process of the La0.67Sr0.33MnO3 biased layer critically depends on the ... Spin structure in an interfacially-coupled epitaxial ferromagnetic oxide heterostructure 2013-05-14T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/a707cY1bH5f1403265681164be9575a3fec5d30cd Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. http://prl.aps.org/accepted/L/1907dYd4Ndf12d4440e08e990d9ee84fee369b5e5 We show that optically encoded two-qubit Bell states can be unambiguously discriminated with a success probability of more than 50% in both single-rail and dual-rail encodings by using active linear-optical resources that include Gaussian squeezing operations. These results are in contrast to the we... Beating the one-half limit of ancilla-free linear optics Bell measurements 2013-05-14T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/1907dYd4Ndf12d4440e08e990d9ee84fee369b5e5 Atomic, Molecular, and Optical Physics Atomic, Molecular, and Optical Physics http://prl.aps.org/accepted/L/d0073Y99P7415947e8069cb07d6195e95aca4abe4 We propose the initial single chiral particle emission (ISChE) mechanism, with which the hidden-charm di-kaon decays of higher charmonia and charmonium-like states are studied. Calculating the distributions of differential decay width, we obtain the line shape of the $J/\psi K^+$ invariant mass spec... Predictions of charged charmoniumlike structures with hidden-charm and open-strange channel 2013-05-14T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/d0073Y99P7415947e8069cb07d6195e95aca4abe4 Elementary Particles and Fields Elementary Particles and Fields http://prl.aps.org/accepted/L/a9071Y37Lbb1292669d32bd1b4634a5b3781f02e3 \indent Using $^{63,65}$Cu nuclear magnetic resonance (NMR) in magnetic fields up to 30 T we study the microscopic properties of the 12-site valence-bond-solid ground state in the ``pinwheel" kagome compound Rb$_2$Cu$_3$SnF$_{12}$. We find that the ground state is characterized by a strong transvers... Microscopic properties of the pinwheel kagome compound Rb$_2$Cu$_3$SnF$_{12}$ 2013-05-13T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/a9071Y37Lbb1292669d32bd1b4634a5b3781f02e3 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. http://prl.aps.org/accepted/L/ec074YcaP4415247f3975376369227da4ec9571b7 The possibility of charge order is theoretically examined for the Kondo lattice model in two dimensions, which does not include bare repulsive interactions. Using two complementary numerical methods, we find that charge order appears at quarter filling in an intermediate Kondo coupling region. The c... Charge order in a two-dimensional Kondo lattice model 2013-05-13T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/ec074YcaP4415247f3975376369227da4ec9571b7 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. http://prl.aps.org/accepted/L/1707cY8cPca14a4a010b31e04e8e7a5dde4360f31 Ground-state two-proton ($2p$) radioactivity is a decay mode found in isotopes of elements with even atomic numbers located beyond the two-proton drip line. So far, this exotic process has been experimentally observed in a few light and medium-mass nuclides with $Z \le 30$. In this study, using stat... Landscape of two-proton radioactivity 2013-05-13T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/1707cY8cPca14a4a010b31e04e8e7a5dde4360f31 Nuclear Physics Nuclear Physics http://prl.aps.org/accepted/L/a9076YfbQae1014d35597003a7f379dae010d86c5 The nature of subproton scale fluctuations in the solar wind is an open question, partly because two similar types of electromagnetic turbulence can occur: kinetic Alfv\'en turbulence and whistler turbulence. These two possibilities, however, have one key qualitative difference: whistler turbulence,... Nature of subproton scale turbulence in the solar wind 2013-05-13T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/a9076YfbQae1014d35597003a7f379dae010d86c5 Plasma and Beam Physics Plasma and Beam Physics http://prl.aps.org/accepted/L/e6076Y5cQ461194272fc1821cce92c1baf7a18671 We devise powerful algorithms based on differential evolution for adaptive many-particle quantum metrology. Our new approach delivers adaptive quantum metrology policies for feedback control that are orders-of-magnitude more efficient and surpass the few-dozen-particle limitation arising in methods ... Differential evolution for many-particle adaptive quantum metrology 2013-05-13T10:00:00-04:00 Personal use only, all commercial or other reuse prohibited article http://prl.aps.org/accepted/L/e6076Y5cQ461194272fc1821cce92c1baf7a18671 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.