Multiplexed quantum memories capable of storing and processing entangled photons are essential for the development of quantum networks. In this context, we demonstrate and certify the simultaneous storage and retrieval of two entangled photons inside a solid-state quantum memory and measure a tempor…

[Phys. Rev. Lett. 117, 240506] Published Fri Dec 09, 2016

]]>Lorentz symmetry violations can be parametrized by an effective field theory framework that contains both general relativity and the standard model of particle physics called the standard-model extension (SME). We present new constraints on pure gravity SME coefficients obtained by analyzing lunar l…

[Phys. Rev. Lett. 117, 241301] Published Fri Dec 09, 2016

]]>Four-lepton decays of the Higgs boson could be used to probe a key parameter of electroweak symmetry breaking.

[Phys. Rev. Lett. 117, 241801] Published Fri Dec 09, 2016

]]>The possible exotic meson ${Z}_{c}(3900)$, found in ${e}^{+}{e}^{-}$ reactions, is studied by the method of coupled-channel scattering in lattice QCD. The interactions among $\pi J/\psi $, $\rho {\eta}_{c}$, and $\overline{D}{D}^{*}$ channels are derived from ($2+1$)-flavor QCD simulations at ${m}_{\pi}=410\u2013700\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{MeV}$. The interactions are dominated by the off-diagonal…

[Phys. Rev. Lett. 117, 242001] Published Fri Dec 09, 2016

]]>The distribution of photons inside the proton can be determined in a model-independent way from electron-proton scattering data.

[Phys. Rev. Lett. 117, 242002] Published Fri Dec 09, 2016

]]>The weakly bound exotic ${}^{11}\mathrm{Be}$ nucleus, famous for its ground-state parity inversion and distinct $n+{}^{10}\mathrm{Be}$ halo structure, is investigated from first principles using chiral two- and three-nucleon forces. An explicit treatment of continuum effects is found to be indispensable. We study the sensitivity o…

[Phys. Rev. Lett. 117, 242501] Published Fri Dec 09, 2016

]]>Photoelectron spectra obtained from the *ab initio* solution of the time-dependent Schrödinger equation can be in striking disagreement with predictions by the strong-field approximation (SFA), not only at low energy but also around twice the ponderomotive energy where the transition from the direct t…

[Phys. Rev. Lett. 117, 243003] Published Fri Dec 09, 2016

]]>The photophysics of a deprotonated model chromophore for the green fluorescent protein is studied by femtosecond laser pulses in an electrostatic ion-storage ring. The laser-pulse duration is much shorter than the time for internal conversion, and, hence, contributions from sequential multiphoton ab…

[Phys. Rev. Lett. 117, 243004] Published Fri Dec 09, 2016

]]>We experimentally study particle exchange in a dissipative double-well potential using laser-cooled atoms in a hybrid trap. We measure the particle hopping rate as a function of barrier height, temperature, and atom number. Single-particle resolution allows us to measure rates over more than 4 order…

[Phys. Rev. Lett. 117, 243005] Published Fri Dec 09, 2016

]]>We demonstrate effective control on the carrier-envelope phase and angular distribution as well as the peak intensity of a nearly single-cycle terahertz pulse emitted from a laser filament formed by two-color, the fundamental and the corresponding second harmonics, femtosecond laser pulses propagati…

[Phys. Rev. Lett. 117, 243901] Published Fri Dec 09, 2016

]]>We show that a 2D spin-polarized Fermi gas immersed in a 3D Bose-Einstein condensate constitutes a very promising system for realizing a ${p}_{x}+i{p}_{y}$ superfluid. The fermions attract each other via an induced interaction mediated by the bosons, and the resulting pairing is analyzed with retardation effect…

[Phys. Rev. Lett. 117, 245302] Published Fri Dec 09, 2016

]]>Discriminating between metallic ($M$) and semiconducting ($S$) single-walled carbon nanotubes (SWNTs) remains a fundamental challenge in the field of nanotechnology. We address this issue by studying the adsorption of the isotropic atoms Xe, Kr, and a highly anisotropic molecule $n$ heptane on $M$- and $S$-SW…

[Phys. Rev. Lett. 117, 246101] Published Fri Dec 09, 2016

]]>GeSe and SnSe monochalcogenide monolayers and bilayers undergo a two-dimensional phase transition from a rectangular unit cell to a square unit cell at a critical temperature ${T}_{c}$ well below the melting point. Its consequences on material properties are studied within the framework of Car-Parrinello m…

[Phys. Rev. Lett. 117, 246802] Published Fri Dec 09, 2016

]]>We use a surface-selective angle-resolved photoemission spectroscopy and unveil the electronic nature on the topmost layer of ${\mathrm{Sr}}_{2}{\mathrm{RuO}}_{4}$ crystal, consisting of slightly rotated ${\mathrm{RuO}}_{6}$ octahedrons. The $\gamma $ band derived from the $4{d}_{xy}$ orbital is found to be about three times narrower than that for the bulk. T…

[Phys. Rev. Lett. 117, 247001] Published Fri Dec 09, 2016

]]>Using relativistic first-principles calculations, we show that the chemical trend of the Dzyaloshinskii-Moriya interaction (DMI) in $3d\text{\u2212}5d$ ultrathin films follows Hund’s first rule with a tendency similar to their magnetic moments in either the unsupported $3d$ monolayers or $3d\text{\u2212}5d$ interfaces. We demons…

[Phys. Rev. Lett. 117, 247202] Published Fri Dec 09, 2016

]]>We theoretically show that a nanoelectromechanical system can be mechanically actuated by a heat flow through it via an electron-electron interaction. In contrast to most known actuation mechanisms in similar systems, this new mechanism does not involve an electronic current nor external ac fields. …

[Phys. Rev. Lett. 117, 247701] Published Fri Dec 09, 2016

]]>In this Letter, both the manipulation of valley-polarized currents and the optical-like behaviors of Dirac fermions are theoretically explored in polycrystalline graphene. When strain is applied, the misorientation between two graphene domains separated by a grain boundary can result in a mismatch o…

[Phys. Rev. Lett. 117, 247702] Published Fri Dec 09, 2016

]]>[Phys. Rev. Lett. 117, 249501] Published Fri Dec 09, 2016

]]>[Phys. Rev. Lett. 117, 249502] Published Fri Dec 09, 2016

]]>[Phys. Rev. Lett. 117, 249701] Published Fri Dec 09, 2016

]]>[Phys. Rev. Lett. 117, 249702] Published Fri Dec 09, 2016

]]>We propose an architecture for an analog quantum simulator of electromagnetism in $2+1$ dimensions, based on an array of superconducting fluxonium devices. The encoding is in the integer (spin-1) representation of the quantum link model formulation of compact $U(1)$ lattice gauge theory. We show how to …

[Phys. Rev. Lett. 117, 240504] Published Wed Dec 07, 2016

]]>We introduce a cryptographically motivated quantifier of entanglement in bipartite Gaussian systems called *Gaussian intrinsic entanglement* (GIE). The GIE is defined as the optimized mutual information of a Gaussian distribution of outcomes of measurements on parts of a system, conditioned on the out…

[Phys. Rev. Lett. 117, 240505] Published Wed Dec 07, 2016

]]>In spin ladder systems, a single characteristic length scale controls the behavior of the spin polarization.

[Phys. Rev. Lett. 117, 240601] Published Wed Dec 07, 2016

]]>IceCube has put the tightest constraints on the cosmogenic neutrino flux—neutrinos produced when ultrahigh energy cosmic rays scatter from the cosmic microwave background. In the process the collaboration has also detected the highest energy neutrino to date.

[Phys. Rev. Lett. 117, 241101] Published Wed Dec 07, 2016

]]>Experiments show that the energy scale of atom-ion interactions is determined by the force the atom exerts on the ion during a collision.

[Phys. Rev. Lett. 117, 243401] Published Wed Dec 07, 2016

]]>Water is one of the most prevalent chemicals on our planet, an integral part of both our environment and our existence as a species. Yet it is also rich in anomalous behaviors. Here we reveal that water is a novel—yet ubiquitous—source for quantum correlated photon pairs at ambient conditions. The p…

[Phys. Rev. Lett. 117, 243603] Published Wed Dec 07, 2016

]]>A laser-based fusion experiment demonstrates that liquid fuel capsules could rectify problems encountered with ice-based fuel capsules.

[Phys. Rev. Lett. 117, 245001] Published Wed Dec 07, 2016

]]>We analyze plasma heating in weakly collisional kinetic Alfvén wave turbulence using high resolution gyrokinetic simulations spanning the range of scales between the ion and the electron gyroradii. Real space structures that have a higher than average heating rate are shown not to be confined to cur…

[Phys. Rev. Lett. 117, 245101] Published Wed Dec 07, 2016

]]>A flow pattern dubbed the von Kármán vortex street, which is renowned for its aesthetic beauty and extreme power, has been created in a superfluid.

[Phys. Rev. Lett. 117, 245301] Published Wed Dec 07, 2016

]]>By using large-scale molecular dynamics simulations, the dynamics of two-dimensional (2D) supercooled liquids turns out to be dependent on the system size, while the size dependence is not pronounced in three-dimensional (3D) systems. It is demonstrated that the strong system-size effect in 2D amorp…

[Phys. Rev. Lett. 117, 245701] Published Wed Dec 07, 2016

]]>Contrary to previous two-band model studies which find increasing temperature would induce a topological phase transition, we show here through first-principles calculations that the opposite is also realizable, depending on the material’s full band structure and symmetry of the electron-phonon coup…

[Phys. Rev. Lett. 117, 246401] Published Wed Dec 07, 2016

]]>The translocation of polymers through nanopores with large internal cavities bounded by two narrow pores is studied via Langevin dynamics simulations. The total translocation time is found to be a nonmonotonic function of polymer length, reaching a minimum at intermediate length, with both shorter a…

[Phys. Rev. Lett. 117, 247802] Published Wed Dec 07, 2016

]]>The speed at which water drains out of a tank depends on the affinity of water with the outside surface of the orifice through which it drains.

[Phys. Rev. Lett. 117, 248002] Published Wed Dec 07, 2016

]]>Quantum entanglement swapping is one of the most promising ways to realize the quantum connection among local quantum nodes. In this Letter, we present an experimental demonstration of the entanglement swapping between two independent multipartite entangled states, each of which involves a tripartit…

[Phys. Rev. Lett. 117, 240503] Published Tue Dec 06, 2016

]]>We investigate the temporal evolution of molecular frame angular distributions of Auger electrons emitted during ultrafast dissociation of HCl following a resonant single-photon excitation. The electron emission pattern changes its shape from that of a molecular $\sigma $ orbital to that of an atomic $p$ stat…

[Phys. Rev. Lett. 117, 243002] Published Tue Dec 06, 2016

]]>A time lens, which can be used to reshape the spectral and temporal properties of light, requires the ultrafast manipulation of optical signals and presents a significant challenge for single-photon application. In this work, we construct a time lens based on dispersion and sum-frequency generation …

[Phys. Rev. Lett. 117, 243602] Published Tue Dec 06, 2016

]]>In bcc metastable $\beta $ titanium alloys, and particularly in superelastic alloys, a unique $\{332\}\u27e8113\u27e9$ twinning system occurs during plastic deformation. However, *in situ* synchrotron x-ray diffraction during a tensile test shows that the $\beta $ phase totally transforms into ${\alpha}^{\prime \prime}$ martensite under stress in a Ti…

[Phys. Rev. Lett. 117, 245501] Published Tue Dec 06, 2016

]]>A single-layer to bilayer transition is induced in a two-dimensional electron gas by applying a parallel magnetic field, enabling the direct study of composite fermions.

[Phys. Rev. Lett. 117, 246801] Published Tue Dec 06, 2016

]]>We study a minimal cognitive flocking model, which assumes that the moving entities navigate using the available instantaneous visual information exclusively. The model consists of active particles, with no memory, that interact by a short-ranged, position-based, attractive force, which acts inside …

[Phys. Rev. Lett. 117, 248001] Published Tue Dec 06, 2016

]]>[Phys. Rev. Lett. 117, 248901] Published Tue Dec 06, 2016

]]>We propose a scalable architecture for a quantum network based on a simple on-chip photonic circuit that performs loss-tolerant two-qubit measurements. The circuit consists of two quantum emitters positioned in the arms of an on-chip Mach-Zehnder interferometer composed of waveguides with chiral-lig…

[Phys. Rev. Lett. 117, 240501] Published Mon Dec 05, 2016

]]>A new implementation of a Maxwell’s demon can control entropy production in a quantum-mechanical system that is driven out of thermal equilibrium.

[Phys. Rev. Lett. 117, 240502] Published Mon Dec 05, 2016

]]>The analytic structure of scattering amplitudes is restricted by Steinmann relations, which enforce the vanishing of certain discontinuities of discontinuities. We show that these relations dramatically simplify the function space for the hexagon function bootstrap in planar maximally supersymmetric…

[Phys. Rev. Lett. 117, 241601] Published Mon Dec 05, 2016

]]>An alternative mechanism for inducing nuclear excitation may provide a sensitive tool for probing metastable states of nuclei.

[Phys. Rev. Lett. 117, 243001] Published Mon Dec 05, 2016

]]>We show how strong light-mediated resonant dipole-dipole interactions between atoms can be utilized in a control and storage of light. The method is based on a high-fidelity preparation of a collective atomic excitation in a single correlated subradiant eigenmode in a lattice. We demonstrate how a s…

[Phys. Rev. Lett. 117, 243601] Published Mon Dec 05, 2016

]]>The anomalous Nernst effect (ANE) and the spin Seebeck effect (SSE) in spin caloritronics are two of the most important mechanisms to manipulate the spin-polarized current and pure spin current by thermal excitation. While the ANE in ferromagnetic metals and the SSE in magnetic insulators have been …

[Phys. Rev. Lett. 117, 247201] Published Mon Dec 05, 2016

]]>Using $567\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{pb}}^{-1}$ of data collected with the BESIII detector at a center-of-mass energy of $\sqrt{s}=4.599\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{GeV}$, near the ${\mathrm{\Lambda}}_{c}^{+}{\overline{\mathrm{\Lambda}}}_{c}^{-}$ threshold, we study the singly Cabibbo-suppressed decays ${\mathrm{\Lambda}}_{c}^{+}\to p{\pi}^{+}{\pi}^{-}$ and ${\mathrm{\Lambda}}_{c}^{+}\to p{K}^{+}{K}^{-}$. By normalizing with respect to the Cabibbo-favored decay ${\mathrm{\Lambda}}_{c}^{+}\to p{K}^{-}{\pi}^{+}$, we obtain ratios of branching …

[Phys. Rev. Lett. 117, 232002] Published Fri Dec 02, 2016

]]>We study the nonlinear optical propagation of two different classes of light beams with space-varying polarization—radially symmetric vector beams and Poincaré beams with lemon and star topologies—in a rubidium vapor cell. Unlike Laguerre-Gauss and other types of beams that quickly experience instab…

[Phys. Rev. Lett. 117, 233903] Published Fri Dec 02, 2016

]]>We demonstrate the phenomenon of induced-charge capacitive deionization that occurs around a porous and conducting particle immersed in an electrolyte, under the action of an external electric field. The external electric field induces an electric dipole in the porous particle, leading to its capaci…

[Phys. Rev. Lett. 117, 234502] Published Fri Dec 02, 2016

]]>Experiments have been performed evidencing significant stimulated Raman sidescattering (SRS) at large angles from the density gradient. This was achieved in long scale-length high-temperature plasmas in which two beams couple to the same scattered electromagnetic wave further demonstrating for the f…

[Phys. Rev. Lett. 117, 235002] Published Fri Dec 02, 2016

]]>A detailed analysis is presented of the various stages of strong coupling Brillouin plasma amplification, emphasizing the importance of the chirp which can be of threefold origin: the intrinsic one driven by the amplification process, the one originating from the chirped-pulse-generated laser pulses…

[Phys. Rev. Lett. 117, 235003] Published Fri Dec 02, 2016

]]>We provide strongly conclusive evidence that the cubic nonlinearity plays an important part in the evolution of the large amplitude magnetic structures in the terrestrial foreshock. Large amplitude nonlinear wave trains at frequencies above the proton cyclotron frequency are identified after nonharm…

[Phys. Rev. Lett. 117, 235102] Published Fri Dec 02, 2016

]]>We report on the single-atom-resolved measurement of the distribution of momenta $\hslash k$ in a weakly interacting Bose gas after a 330 ms time of flight. We investigate it for various temperatures and clearly separate two contributions to the depletion of the condensate by their $k$ dependence. The first on…

[Phys. Rev. Lett. 117, 235303] Published Fri Dec 02, 2016

]]>The topological band gap in a Fermi gas is controlled by tuning the polarization of Raman lasers that create a perpendicular Zeeman field, leading to a band gap opening.

[Phys. Rev. Lett. 117, 235304] Published Fri Dec 02, 2016

]]>Characterization of the nontrivial topology in bismuth through high-resolution ARPES measurements is aided by a new quantum well geometry.

[Phys. Rev. Lett. 117, 236402] Published Fri Dec 02, 2016

]]>We present a scaling description of a metal-insulator transition in two-dimensional electron systems that is driven by a vanishing compressibility rather than a vanishing diffusion coefficient. A small set of basic assumptions leads to a consistent theoretical framework that is compatible with exist…

[Phys. Rev. Lett. 117, 236803] Published Fri Dec 02, 2016

]]>We investigate the critical current ${I}_{C}$ of ballistic Josephson junctions made of encapsulated graphene–boron-nitride heterostructures. We observe a crossover from the short to the long junction regimes as the length of the device increases. In long ballistic junctions, ${I}_{C}$ is found to scale as $\propto \mathrm{exp}(-{k}_{\dots}$

[Phys. Rev. Lett. 117, 237002] Published Fri Dec 02, 2016

]]>${\mathrm{Sr}}_{2}{\mathrm{CuTeO}}_{6}$ presents an opportunity for exploring low-dimensional magnetism on a square lattice of $S=1/2\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{Cu}}^{2+}$ ions. We employ *ab initio* multireference configuration interaction calculations to unravel the ${\mathrm{Cu}}^{2+}$ electronic structure and to evaluate exchange interactions in ${\mathrm{Sr}}_{2}{\mathrm{CuTeO}}_{6}$. The latter results…

[Phys. Rev. Lett. 117, 237203] Published Fri Dec 02, 2016

]]>A system that produces radiation by sending electrons through a metamaterial waveguide could potentially generate high-power microwaves with high efficiency.

[Phys. Rev. Lett. 117, 237701] Published Fri Dec 02, 2016

]]>We report on the stability of the quantum Hall plateau in wide Hall bars made from a chemically gated graphene film grown on SiC. The $\nu =2$ quantized plateau appears from fields $B\simeq 5\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{T}$ and persists up to $B\simeq 80\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{T}$. At high current density, in the breakdown regime, the longitudinal resistance oscillates …

[Phys. Rev. Lett. 117, 237702] Published Fri Dec 02, 2016

]]>The emergence of mutations is studied in a system of self-replicating colloids, showing behavior similar to that seen in growing bacterial colonies.

[Phys. Rev. Lett. 117, 238004] Published Fri Dec 02, 2016

]]>We experimentally observed considerable solubility of tryptophan (Trp) in a ${\mathrm{CuCl}}_{2}$ aqueous solution, which could reach 2–5 times the solubility of Trp in pure water. Theoretical studies show that the strong cation-$\pi $ interaction between ${\mathrm{Cu}}^{2+}$ and the aromatic ring in Trp modifies the electronic distrib…

[Phys. Rev. Lett. 117, 238102] Published Fri Dec 02, 2016

]]>[Phys. Rev. Lett. 117, 239901] Published Fri Dec 02, 2016

]]>[Phys. Rev. Lett. 117, 239902] Published Fri Dec 02, 2016

]]>[Phys. Rev. Lett. 117, 239903] Published Fri Dec 02, 2016

]]>By how much must the communication complexity of a function increase if we demand that the parties not only correctly compute the function but also return all registers (other than the one containing the answer) to their initial states at the end of the communication protocol? Protocols that achieve…

[Phys. Rev. Lett. 117, 230503] Published Thu Dec 01, 2016

]]>A study of bursting phenomena like earthquakes suggests that events appear to cluster in time because of the way that small events like aftershocks are identified.

[Phys. Rev. Lett. 117, 230601] Published Thu Dec 01, 2016

]]>Experiments and vortex-in-cell simulations are used to study an initially axisymmetric, spatially distributed vortex subject to an externally imposed strain flow. The experiments use a magnetized pure electron plasma to model an inviscid two-dimensional fluid. The results are compared to a theory as…

[Phys. Rev. Lett. 117, 235001] Published Thu Dec 01, 2016

]]>The evolution of magnetorotational turbulence is tracked in 3D kinetic simulations for the first time.

[Phys. Rev. Lett. 117, 235101] Published Thu Dec 01, 2016

]]>[Phys. Rev. Lett. 117, 239701] Published Thu Dec 01, 2016

]]>[Phys. Rev. Lett. 117, 239702] Published Thu Dec 01, 2016

]]>We provide a general construction of quantum generalized master equations with a memory kernel leading to well-defined, that is, completely positive and trace-preserving, time evolutions. The approach builds on an operator generalization of memory kernels appearing in the description of non-Markovia…

[Phys. Rev. Lett. 117, 230401] Published Wed Nov 30, 2016

]]>Recently, the physically realistic protocol amplifying the randomness of Santha-Vazirani sources producing cryptographically secure random bits was proposed; however, for reasons of practical relevance, the crucial question remained open regarding whether this can be accomplished under the minimal c…

[Phys. Rev. Lett. 117, 230501] Published Wed Nov 30, 2016

]]>We report here on a new method for calculating the renormalized stress-energy tensor (RSET) in black-hole (BH) spacetimes, which should also be applicable to dynamical BHs and to spinning BHs. This new method only requires the spacetime to admit a single symmetry. Thus far, we have developed three v…

[Phys. Rev. Lett. 117, 231101] Published Wed Nov 30, 2016

]]>The decay rates of quasistable states in quantum field theories are usually calculated using instanton methods. Standard derivations of these methods rely in a crucial way upon deformations and analytic continuations of the physical potential and on the saddle-point approximation. While the resultin…

[Phys. Rev. Lett. 117, 231601] Published Wed Nov 30, 2016

]]>Assigning a chaos index for dynamics of generic quantum field theories is a challenging problem because the notion of a Lyapunov exponent, which is useful for singling out chaotic behavior, works only in classical systems. We address the issue by using the $\mathrm{AdS}/\mathrm{CFT}$ correspondence, as the large ${N}_{c}$ lim…

[Phys. Rev. Lett. 117, 231602] Published Wed Nov 30, 2016

]]>We initiate the calculation of loop corrections to correlation functions in 4D defect conformal field theories (dCFTs). More precisely, we consider $\mathcal{N}=4$ SYM theory with a codimension-one defect separating two regions of space, ${x}_{3}>0$ and ${x}_{3}<0$, where the gauge group is $SU(N)$ and $SU(N-k)$, respectiv…

[Phys. Rev. Lett. 117, 231603] Published Wed Nov 30, 2016

]]>We consider a class of models involving interactions between ultralight scalar dark matter and standard model neutrinos. Such couplings modify the neutrino mass splittings and mixing angles to include additional components that vary in time periodically with a frequency and amplitude set by the mass…

[Phys. Rev. Lett. 117, 231801] Published Wed Nov 30, 2016

]]>The nature of the interaction between superfluid vortices and the neutron star crust, conjectured by Anderson and Itoh in 1975 to be at the heart vortex creep and the cause of glitches, has been a long-standing question in astrophysics. Using a qualitatively new approach, we follow the dynamics as s…

[Phys. Rev. Lett. 117, 232701] Published Wed Nov 30, 2016

]]>We discuss the generation of subwavelength optical barriers on the scale of tens of nanometers, as conservative optical potentials for cold atoms. These arise from nonadiabatic corrections to Born-Oppenheimer potentials from dressed “dark states” in atomic $\mathrm{\Lambda}$ configurations. We illustrate the concept…

[Phys. Rev. Lett. 117, 233001] Published Wed Nov 30, 2016

]]>The transverse stability of the target is crucial for obtaining high quality ion beams using the laser radiation pressure acceleration (RPA) mechanism. In this Letter, a theoretical model and supporting two-dimensional (2D) particle-in-cell (PIC) simulations are presented to clarify the physical mec…

[Phys. Rev. Lett. 117, 234801] Published Wed Nov 30, 2016

]]>We have characterized the one-dimensional (1D) to three-dimensional (3D) crossover of a two-component spin-imbalanced Fermi gas of ${}^{6}\mathrm{Li}$ atoms in a 2D optical lattice by varying the lattice tunneling and the interactions. The gas phase separates, and we detect the phase boundaries using *in situ* imagin…

[Phys. Rev. Lett. 117, 235301] Published Wed Nov 30, 2016

]]>Out-of-equilibrium systems can host phenomena that transcend the usual restrictions of equilibrium systems. Here, we unveil how out-of-equilibrium states, prepared via a quantum quench in a two-band system, can exhibit a nonzero Hall-type current—a remnant Hall response—even when the instantaneous H…

[Phys. Rev. Lett. 117, 235302] Published Wed Nov 30, 2016

]]>The structural properties of ${\mathrm{LaCu}}_{6-x}{\mathrm{Au}}_{x}$ are studied using neutron diffraction, x-ray diffraction, and heat capacity measurements. The continuous orthorhombic-monoclinic structural phase transition in ${\mathrm{LaCu}}_{6}$ is suppressed linearly with Au substitution until a complete suppression of the structural pha…

[Phys. Rev. Lett. 117, 235701] Published Wed Nov 30, 2016

]]>Weyl materials with only two Weyl nodes are predicted in a time-reversal-breaking system.

[Phys. Rev. Lett. 117, 236401] Published Wed Nov 30, 2016

]]>We investigate the possibility of spin-preserving symmetries due to the interplay of Rashba and Dresselhaus spin-orbit coupling in $n$-doped zinc-blende semiconductor quantum wells of general crystal orientation. It is shown that a conserved spin operator can be realized if and only if at least two gr…

[Phys. Rev. Lett. 117, 236801] Published Wed Nov 30, 2016

]]>To elucidate the magnetic structure and the origin of the nematicity in FeSe, we perform a high-pressure ${}^{77}\mathrm{Se}$ NMR study on FeSe single crystals. We find a suppression of the structural transition temperature with pressure up to about 2 GPa from the anisotropy of the Knight shift. Above 2 GPa, a stri…

[Phys. Rev. Lett. 117, 237001] Published Wed Nov 30, 2016

]]>The Belitz-Kirkpatrick-Vojta (BKV) theory shows in excellent agreement with experiment that ferromagnetic quantum phase transitions (QPTs) in clean metals are generally first order due to the coupling of the magnetization to electronic soft modes, in contrast to the classical analogue that is an arc…

[Phys. Rev. Lett. 117, 237202] Published Wed Nov 30, 2016

]]>The complex electronic properties of ${\mathrm{ZrTe}}_{5}$ have recently stimulated in-depth investigations that assigned this material to either a topological insulator or a 3D Dirac semimetal phase. Here we report a comprehensive experimental and theoretical study of both electronic and structural properties of ${\mathrm{Z\dots}}_{}$

[Phys. Rev. Lett. 117, 237601] Published Wed Nov 30, 2016

]]>Molecular dynamics simulations are used to provide strong evidence for barrier-free nucleation events in a heterogeneous solid-solid system. The barrier-free events are characterized by an absence of an incubation time and a growth rate of the emerging phase that is independent of the system size. F…

[Phys. Rev. Lett. 117, 238001] Published Wed Nov 30, 2016

]]>We propose a model solely based on actin treadmilling and polymerization which describes many characteristic states of actin-wave formation: spots, spirals, and traveling waves. In our model, as in experiments on cells recovering motility following actin depolymerization, we choose an isotropic low-…

[Phys. Rev. Lett. 117, 238002] Published Wed Nov 30, 2016

]]>Theorists correctly predict the change in position of paramagnetic particles embedded in a gel and subject to a magnetic field by considering the effective elastic interparticle interactions.

[Phys. Rev. Lett. 117, 238003] Published Wed Nov 30, 2016

]]>In biology, template-directed copolymerization is the fundamental mechanism responsible for the synthesis of DNA, RNA, and proteins. More than 50 years have passed since the discovery of DNA structure and its role in coding genetic information. Yet, the kinetics and thermodynamics of information pro…

[Phys. Rev. Lett. 117, 238101] Published Wed Nov 30, 2016

]]>[Phys. Rev. Lett. 117, 239601] Published Wed Nov 30, 2016

]]>[Phys. Rev. Lett. 117, 239602] Published Wed Nov 30, 2016

]]>The weak-value-based metrology is very promising and has attracted a lot of attention in recent years because of its remarkable ability in signal amplification. However, it is suggested that the upper limit of the precision of this metrology cannot exceed that of classical metrology because of the l…

[Phys. Rev. Lett. 117, 230801] Published Tue Nov 29, 2016

]]>The most precise top quark mass measurements use kinematic reconstruction methods, determining the top mass parameter of a Monte Carlo event generator ${m}_{t}^{\mathrm{MC}}$. Because of hadronization and parton-shower dynamics, relating ${m}_{t}^{\mathrm{MC}}$ to a field theory mass is difficult. We present a calibration procedure to d…

[Phys. Rev. Lett. 117, 232001] Published Tue Nov 29, 2016

]]>We present pump-probe measurements of an all-optical photonic crystal switch based on a nanocavity, resolving fast coherent temporal dynamics. The measurements demonstrate the importance of coherent effects typically neglected when considering nanocavity dynamics. In particular, we report the observ…

[Phys. Rev. Lett. 117, 233901] Published Tue Nov 29, 2016

]]>Converting infrared light to visible light might boost the sensitivity of infrared telescope arrays.

[Phys. Rev. Lett. 117, 233902] Published Tue Nov 29, 2016

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