We determine both the quantum and the private capacities of low-noise quantum channels to leading orders in the channel’s distance to the perfect channel. It has been an open problem for more than 20 yr to determine the capacities of some of these low-noise channels such as the depolarizing channel....

[Phys. Rev. Lett. 120, 160503] Published Fri Apr 20, 2018

]]>A search for high-mass resonances decaying to $\tau \nu $ using proton-proton collisions at $\sqrt{s}=13\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{TeV}$ produced by the Large Hadron Collider is presented. Only $\tau $-lepton decays with hadrons in the final state are considered. The data were recorded with the ATLAS detector and correspond to an integrated luminos...

[Phys. Rev. Lett. 120, 161802] Published Fri Apr 20, 2018

]]>Recent experiments demonstrate the importance of substrate curvature for actively forced fluid dynamics. Yet, the covariant formulation and analysis of continuum models for nonequilibrium flows on curved surfaces still poses theoretical challenges. Here, we introduce and study a generalized covarian...

[Phys. Rev. Lett. 120, 164503] Published Fri Apr 20, 2018

]]>The spectrum of elementary excitations in one-dimensional quantum liquids is generically linear at low momenta. It is characterized by the sound velocity that can be related to the ground-state energy. Here we study the spectrum at higher momenta in Galilean-invariant integrable models. Somewhat sur...

[Phys. Rev. Lett. 120, 165302] Published Fri Apr 20, 2018

]]>The binary Kob-Andersen (KA) Lennard-Jones mixture is the standard model for computational studies of viscous liquids and the glass transition. For very long simulations, the viscous KA system crystallizes, however, by phase separating into a pure $A$ particle phase forming a fcc crystal. We present t...

[Phys. Rev. Lett. 120, 165501] Published Fri Apr 20, 2018

]]>The charge-density response of extended materials is usually dominated by the collective oscillation of electrons, the plasmons. Beyond this feature, however, intriguing many-body effects are observed. They cannot be described by one of the most widely used approaches for the calculation of dielectr...

[Phys. Rev. Lett. 120, 166402] Published Fri Apr 20, 2018

]]>It is observed that many thin superconducting films with not too high disorder level (generally ${R}_{N}/\square <2000\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{\Omega}$) placed in magnetic field show an anomalous metallic phase where the resistance is low but still finite as temperature goes to zero. Here we report in weakly disordered amorphous ${\mathrm{InO}}_{x}$ thin...

[Phys. Rev. Lett. 120, 167002] Published Fri Apr 20, 2018

]]>The three-dimensional distribution of the x-ray diffuse scattering intensity of ${\mathrm{BaTiO}}_{3}$ has been recorded in a synchrotron experiment and simultaneously computed using molecular dynamics simulations of a shell model. Together, these have allowed the details of the disorder in paraelectric ${\mathrm{BaTiO}}_{3}$ to b...

[Phys. Rev. Lett. 120, 167601] Published Fri Apr 20, 2018

]]>We experimentally study the coupling of group V donor spins in silicon to mechanical strain, and measure strain-induced frequency shifts that are linear in strain, in contrast to the quadratic dependence predicted by the valley repopulation model (VRM), and therefore orders of magnitude greater than...

[Phys. Rev. Lett. 120, 167701] Published Fri Apr 20, 2018

]]>A single-particle mobility edge (SPME) marks a critical energy separating extended from localized states in a quantum system. In one-dimensional systems with uncorrelated disorder, a SPME cannot exist, since all single-particle states localize for arbitrarily weak disorder strengths. However, in a q...

[Phys. Rev. Lett. 120, 160404] Published Thu Apr 19, 2018

]]>Gravitational-wave observations of binary black holes currently rely on theoretical models that predict the dominant multipoles $(\ell =2,|m|=2)$ of the radiation during inspiral, merger, and ringdown. We introduce a simple method to include the subdominant multipoles to binary black hole gravitational wa...

[Phys. Rev. Lett. 120, 161102] Published Thu Apr 19, 2018

]]>A moderately intense 450 fs laser pulse is used to create rotational wave packets in gas phase ${\mathrm{I}}_{2}$ molecules. The ensuing time-dependent alignment, measured by Coulomb explosion imaging with a delayed probe pulse, exhibits the characteristic revival structures expected for rotational wave packets but...

[Phys. Rev. Lett. 120, 163202] Published Thu Apr 19, 2018

]]>The remarkably long lifetime of surface nanobubbles has perplexed researchers for two decades. The current understanding is that both contact line pinning and supersaturation of the ambient liquid are strictly required for the stability of nanobubbles, yet experiments show nanobubbles surviving in o...

[Phys. Rev. Lett. 120, 164502] Published Thu Apr 19, 2018

]]>Photonic structures operating in the terahertz (THz) spectral region enable the essential characteristics of confinement, modal control, and electric field shielding for very high gradient accelerators based on wakefields in dielectrics. We report here an experimental investigation of THz wakefield ...

[Phys. Rev. Lett. 120, 164801] Published Thu Apr 19, 2018

]]>The phase diagram of hydrogen-helium mixtures is presented to 75 GPa, underscoring the formation of metastable ${\mathrm{H}}_{2}$-rich crystallite in He-rich fluid mixtures and the structural phase transition in He lattice at $\sim 52\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{GPa}$. The Raman data also indicate a significant level of mixing between ${\mathrm{H}}_{2}$ and He eve...

[Phys. Rev. Lett. 120, 165301] Published Thu Apr 19, 2018

]]>Whereas theoretical investigations have revealed the significant influence of magnetic surface and edge states on Skyrmonic spin texture in chiral magnets, experimental studies of such chiral states remain elusive. Here, we study chiral edge states in an FeGe nanostripe experimentally using off-axis...

[Phys. Rev. Lett. 120, 167204] Published Thu Apr 19, 2018

]]>A unified framework is derived for describing the glassiness of both particle-based ices and spin ices.

[Phys. Rev. Lett. 120, 167205] Published Thu Apr 19, 2018

]]>A self-organization transition of polariton wavepackets from a bright solitonic state to an exciton-polariton condensate is predicted theoretically and demonstrated experimentally.

[Phys. Rev. Lett. 120, 167402] Published Thu Apr 19, 2018

]]>[Phys. Rev. Lett. 120, 169902] Published Thu Apr 19, 2018

]]>We report on the observation of the scissors mode of a single dipolar quantum droplet. The existence of this mode is due to the breaking of the rotational symmetry by the dipole-dipole interaction, which is fixed along an external homogeneous magnetic field. By modulating the orientation of this mag...

[Phys. Rev. Lett. 120, 160402] Published Wed Apr 18, 2018

]]>We prove that universal quantum computation can be realized—using only linear optics and ${\chi}^{(2)}$ (three-wave mixing) interactions—in any ($n+1$)-dimensional qudit basis of the $n$-pump-photon subspace. First, we exhibit a strictly universal gate set for the qubit basis in the one-pump-photon subspace. Next...

[Phys. Rev. Lett. 120, 160502] Published Wed Apr 18, 2018

]]>The process of atomization often involves ejecting thin liquid sheets at high speeds from a nozzle that causes the sheet to flap violently and break up into fine droplets. The flapping of the liquid sheet has long been attributed to the sheet’s interaction with the surrounding gas phase. Here, we pr...

[Phys. Rev. Lett. 120, 164501] Published Wed Apr 18, 2018

]]>The first octahedral spherical hohlraum energetics experiment is accomplished at the SGIII laser facility. For the first time, the 32 laser beams are injected into the octahedral spherical hohlraum through six laser entrance holes. Two techniques are used to diagnose the radiation field of the octah...

[Phys. Rev. Lett. 120, 165001] Published Wed Apr 18, 2018

]]>Machine-learning-based molecular dynamics simulations explain the growth mechanism of diamond-like amorphous carbon films.

[Phys. Rev. Lett. 120, 166101] Published Wed Apr 18, 2018

]]>Strongly correlated materials exhibit intriguing properties caused by intertwined microscopic interactions that are hard to disentangle in equilibrium. Employing nonequilibrium time-resolved photoemission spectroscopy on the quasi-two-dimensional transition-metal dichalcogenide $1T$-$\mathrm{Ta}{\mathrm{S}}_{2}$, we identify ...

[Phys. Rev. Lett. 120, 166401] Published Wed Apr 18, 2018

]]>We show that the magnetic ordering of coupled atomic dimers on a superconductor is revealed by their intragap spectral features. Chromium atoms on the superconductor $\beta \text{\u2212}{\mathrm{Bi}}_{2}\mathrm{Pd}$ surface display Yu-Shiba-Rusinov bound states, detected as pairs of intragap excitations in tunneling spectra. By means of ato...

[Phys. Rev. Lett. 120, 167001] Published Wed Apr 18, 2018

]]>[Phys. Rev. Lett. 120, 169901] Published Wed Apr 18, 2018

]]>We introduce an exact mapping between the Dirac equation in ($1+1$)-dimensional curved spacetime (DCS) and a multiphoton quantum Rabi model (QRM). A background of a ($1+1$)-dimensional black hole requires a QRM with one- and two-photon terms that can be implemented in a trapped ion for the quantum simul...

[Phys. Rev. Lett. 120, 160403] Published Tue Apr 17, 2018

]]>When quantum states are used to send classical information, the receiver performs a measurement on the signal states. The amount of information extracted is often not optimal due to the receiver’s measurement scheme and experimental apparatus. For quantum nondemolition measurements, there is potenti...

[Phys. Rev. Lett. 120, 160501] Published Tue Apr 17, 2018

]]>We constrain effective field theories by going beyond the familiar positivity bounds that follow from unitarity, analyticity, and crossing symmetry of the scattering amplitudes. As interesting examples, we discuss the implications of the bounds for the Galileon and ghost-free massive gravity. The co...

[Phys. Rev. Lett. 120, 161101] Published Tue Apr 17, 2018

]]>Very light particles with $CP$-violating couplings to ordinary matter, such as axions or axionlike particles, can mediate long-range forces between polarized and unpolarized fermions. We describe a new experimental search for such forces between unpolarized nucleons in two 250 kg Pb weights and polari...

[Phys. Rev. Lett. 120, 161801] Published Tue Apr 17, 2018

]]>We compute the electric conductivity of quark matter at finite temperature $T$ and a quark chemical potential $\mu $ under a magnetic field $B$ beyond the lowest Landau level approximation. The electric conductivity transverse to $B$ is dominated by the Hall conductivity ${\sigma}_{H}$. For the longitudinal conductivity ${\sigma}_{...}$

[Phys. Rev. Lett. 120, 162301] Published Tue Apr 17, 2018

]]>Quantum squeezing is predicted to help overcome the high levels of intrinsic noise for synchronizing harmonic oscillators in the quantum regime, allowing the behavior to be experimentally observed.

[Phys. Rev. Lett. 120, 163601] Published Tue Apr 17, 2018

]]>We study a one-dimensional gas of hard rods trapped in a harmonic potential, which breaks integrability of the hard-rod interaction in a nonuniform way. We explore the consequences of such broken integrability for the dynamics of a large number of particles and find three distinct regimes: initial, ...

[Phys. Rev. Lett. 120, 164101] Published Tue Apr 17, 2018

]]>We propose a quantitative and reversible method for tuning the charge localization of Au-stabilized stepped Si surfaces by site-specific hydrogenation. This is demonstrated for Si(553)-Au as a model system by combining density functional theory simulations and reflectance anisotropy spectroscopy exp...

[Phys. Rev. Lett. 120, 166801] Published Tue Apr 17, 2018

]]>We study the quantum spin dynamics of a frustrated $XXZ$ model on a pyrochlore lattice by using large-scale quantum Monte Carlo simulation and stochastic analytic continuation. In the low-temperature quantum spin ice regime, we observe signatures of coherent photon and spinon excitations in the dynami...

[Phys. Rev. Lett. 120, 167202] Published Tue Apr 17, 2018

]]>We study nonlinear spin motion in one-dimensional magnetic chains. We find significant differences from the classic Fermi-Pasta-Ulam (FPU) problem examining nonlinear elastic motion in a chain. We find that FPU behavior, the transfer of energy among low order eigenmodes, does not occur in magnetic s...

[Phys. Rev. Lett. 120, 167203] Published Tue Apr 17, 2018

]]>Phonon-induced Rabi splitting of the orbital states of a diamond nitrogen-vacancy center is experimentally demonstrated.

[Phys. Rev. Lett. 120, 167401] Published Tue Apr 17, 2018

]]>X-ray radiation damage provides a serious bottleneck for investigating microsecond to second dynamics on nanometer length scales employing x-ray photon correlation spectroscopy. This limitation hinders the investigation of real time dynamics in most soft matter and biological materials which can tol...

[Phys. Rev. Lett. 120, 168001] Published Tue Apr 17, 2018

]]>We study disordered interacting bosons described by the Bose-Hubbard model with Gaussian-distributed random tunneling amplitudes. It is shown that the off-diagonal disorder induces a spin-glass-like ground state, characterized by randomly frozen quantum-mechanical U(1) phases of bosons. To access cr...

[Phys. Rev. Lett. 120, 160401] Published Mon Apr 16, 2018

]]>We conjecture a new set of analytic relations for scattering amplitudes in planar $\mathcal{N}=4$ super Yang-Mills theory. They generalize the Steinmann relations and are expressed in terms of the cluster algebras associated to $\mathrm{Gr}(4,n)$. In terms of the symbol, they dictate which letters can appear consecutively...

[Phys. Rev. Lett. 120, 161601] Published Mon Apr 16, 2018

]]>We present the next-to-leading-order QCD corrections to the production of a Higgs boson in association with one jet at the LHC including the full top-quark mass dependence. The mass of the bottom quark is neglected. The two-loop integrals appearing in the virtual contribution are calculated numerica...

[Phys. Rev. Lett. 120, 162001] Published Mon Apr 16, 2018

]]>Size-selected dianionic lead clusters ${\mathrm{Pb}}_{n}^{2-}$, $n=34\u201356$, are stored in a Penning trap and studied with respect to their decay products upon photoexcitation. Contrary to the decay of other dianionic metal clusters, these lead clusters show a variety of decay channels. The mass spectra of the fragments a...

[Phys. Rev. Lett. 120, 163001] Published Mon Apr 16, 2018

]]>The hydrogen molecule has become a test ground for quantum electrodynamical calculations in molecules. Expanding beyond studies on stable hydrogenic species to the heavier radioactive tritium-bearing molecules, we report on a measurement of the fundamental ${\mathrm{T}}_{2}$ vibrational splitting $(v=0\to 1)$ for $J=0\u20135$ ...

[Phys. Rev. Lett. 120, 163002] Published Mon Apr 16, 2018

]]>We demonstrate coherent microwave control of the rotational, hyperfine, and Zeeman states of ultracold CaF molecules, and the magnetic trapping of these molecules in a single, selectable quantum state. We trap about $5\times {10}^{3}$ molecules for almost 2 s at a temperature of $70(8)\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mu \mathrm{K}$ and a density of $1.2\times {10}^{\mathrm{...}}$

[Phys. Rev. Lett. 120, 163201] Published Mon Apr 16, 2018

]]>Although diffractive spreading is an unavoidable feature of all wave phenomena, certain waveforms can attain propagation invariance. A lesser-explored strategy for achieving optical self-similar propagation exploits the modification of the spatiotemporal field structure when observed in reference fr...

[Phys. Rev. Lett. 120, 163901] Published Mon Apr 16, 2018

]]>It is shown that a highly randomlike behavior of light polarization states in the output of a free-running laser diode, covering the whole Poincaré sphere, arises as a result from a fully deterministic nonlinear process, which is characterized by a hyperchaotic dynamics of two polarization modes non...

[Phys. Rev. Lett. 120, 163902] Published Mon Apr 16, 2018

]]>In this Letter, we show that it is possible to structure the longitudinal polarization component of light. We illustrate our approach by demonstrating linked and knotted longitudinal vortex lines acquired upon nonparaxially propagating a tightly focused subwavelength beam. The remaining degrees of f...

[Phys. Rev. Lett. 120, 163903] Published Mon Apr 16, 2018

]]>Nucleation of ice from vapor on atmospheric aerosols has been attributed to the condensation and freezing of supercooled water in small pores. Here we use wedge pores on mica to directly observe the growth of ice in confinement prior to the growth of bulk crystals. We report a transition in behavior...

[Phys. Rev. Lett. 120, 165701] Published Mon Apr 16, 2018

]]>We report the observation of spin-to-charge current conversion in strained mercury telluride at room temperature, using spin pumping experiments. We show that a HgCdTe barrier can be used to protect the HgTe from direct contact with the ferromagnet, leading to very high conversion rates, with invers...

[Phys. Rev. Lett. 120, 167201] Published Mon Apr 16, 2018

]]>We derive a family of Gaussian non-Markovian stochastic Schrödinger equations for the dynamics of open quantum systems. The different unravelings correspond to different choices of squeezed coherent states, reflecting different measurement schemes on the environment. Consequently, we are able to giv...

[Phys. Rev. Lett. 120, 150402] Published Fri Apr 13, 2018

]]>Long-lived transitions occur naturally in atomic systems due to the abundance of selection rules inhibiting spontaneous emission. By contrast, transitions of superconducting artificial atoms typically have large dipoles, and hence their lifetimes are determined by the dissipative environment of a ma...

[Phys. Rev. Lett. 120, 150503] Published Fri Apr 13, 2018

]]>We realize a $\mathrm{\Lambda}$ system in a superconducting circuit, with metastable states exhibiting lifetimes up to 8 ms. We exponentially suppress the tunneling matrix elements involved in spontaneous energy relaxation by creating a “heavy” fluxonium, realized by adding a capacitive shunt to the original circuit...

[Phys. Rev. Lett. 120, 150504] Published Fri Apr 13, 2018

]]>Under unitary time evolution, expectation values of physically reasonable observables often evolve towards the predictions of equilibrium statistical mechanics. The eigenstate thermalization hypothesis (ETH) states that this is also true already for individual energy eigenstates. Here we aim at eluc...

[Phys. Rev. Lett. 120, 150603] Published Fri Apr 13, 2018

]]>Complete flavor decompositions of the matrix elements of the scalar, axial, and tensor currents in the proton, deuteron, diproton, and ${}^{3}\mathrm{He}$ at SU(3)-symmetric values of the quark masses corresponding to a pion mass ${m}_{\pi}\sim 806\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{MeV}$ are determined using lattice quantum chromodynamics. At the physical quark...

[Phys. Rev. Lett. 120, 152002] Published Fri Apr 13, 2018

]]>We observed the atomic $1s$ and $2p$ states of ${\pi}^{-}$ bound to ${}^{121}\mathrm{Sn}$ nuclei as distinct peak structures in the missing mass spectra of the ${}^{122}\text{Sn}(d,{}^{3}\text{He})$ nuclear reaction. A very intense deuteron beam and a spectrometer with a large angular acceptance let us achieve a potential of discovery, which includes th...

[Phys. Rev. Lett. 120, 152505] Published Fri Apr 13, 2018

]]>Coupling a quantum anomalous Hall (QAH) state with a superconducting state offers an attractive approach to detect the signature alluding to a topological superconducting state [Q. L. He *et al.*, Science **357**, 294 (2017)], but its explanation could be clouded by disorder effects in magnetic doped QAH ...

[Phys. Rev. Lett. 120, 156406] Published Fri Apr 13, 2018

]]>The Dzyaloshinskii-Moriya interaction (DMI) at the heavy metal (HM) and ferromagnetic metal (FM) interface has been recognized as a key ingredient in spintronic applications. Here we investigate the chemical trend of DMI on the $5d$ band filling ($5{d}^{3}\u20135{d}^{10}$) of the HM element in HM/FM $(\mathrm{FM}=\mathrm{CoFeB},\mathrm{Co})/\mathrm{MgO}$ ...

[Phys. Rev. Lett. 120, 157204] Published Fri Apr 13, 2018

]]>We investigate a new class of topological antiferromagnetic (AF) Chern insulators driven by electronic interactions in two-dimensional systems without inversion symmetry. Despite the absence of a net magnetization, AF Chern insulators (AFCI) possess a nonzero Chern number $C$ and exhibit the quantum a...

[Phys. Rev. Lett. 120, 157205] Published Fri Apr 13, 2018

]]>Motivated by recent experiments, we study a quasi-one-dimensional model of a Kondo lattice with ferromagnetic coupling between the spins. Using bosonization and dynamical large-$N$ techniques, we establish the presence of a Fermi liquid and a magnetic phase separated by a local quantum critical point,...

[Phys. Rev. Lett. 120, 157206] Published Fri Apr 13, 2018

]]>The problem of how staple yarns transmit tension is addressed within abstract models in which the Amontons-Coulomb friction laws yield a linear programing (LP) problem for the tensions in the fiber elements. We find there is a percolation transition such that above the percolation threshold the tran...

[Phys. Rev. Lett. 120, 158001] Published Fri Apr 13, 2018

]]>A mathematical model that focuses on the molecular resources required by bacteria explains why such a large number of species arises in one place and can live together harmoniously.

[Phys. Rev. Lett. 120, 158102] Published Fri Apr 13, 2018

]]>We provide a constitutive model of semiflexible and rigid amyloid fibril networks by combining the affine thermal model of network elasticity with the Derjaguin-Landau-Vervey-Overbeek (DLVO) theory of electrostatically charged colloids. When compared to rheological experiments on $\beta $-lactoglobulin and...

[Phys. Rev. Lett. 120, 158103] Published Fri Apr 13, 2018

]]>The performance of a quantum device for an infinite set of inputs could be evaluated by preparing a single entangled state and performing a single measurement on the output.

[Phys. Rev. Lett. 120, 150502] Published Thu Apr 12, 2018

]]>In thermodynamics, quantum coherences—superpositions between energy eigenstates—behave in distinctly nonclassical ways. Here we describe how thermodynamic coherence splits into two kinds—“internal” coherence that admits an energetic value in terms of thermodynamic work, and “external” coherence that...

[Phys. Rev. Lett. 120, 150602] Published Thu Apr 12, 2018

]]>All lattice-QCD calculations of the hadronic-vacuum-polarization contribution to the muon’s anomalous magnetic moment to date have been performed with degenerate up- and down-quark masses. Here we calculate directly the strong-isospin-breaking correction to ${a}_{\mu}^{\mathrm{HVP}}$ for the first time with physical val...

[Phys. Rev. Lett. 120, 152001] Published Thu Apr 12, 2018

]]>Ab-inito calculations of ${}^{100}$Sn with $N$ = $Z$ = $50$ predict it to be doubly magic.

[Phys. Rev. Lett. 120, 152503] Published Thu Apr 12, 2018

]]>The largest neutron-neutron correlation strength is measured in the valence neutrons of ${}^{18}$C.

[Phys. Rev. Lett. 120, 152504] Published Thu Apr 12, 2018

]]>We propose a novel experimental method to extend the investigation of ion-atom collisions from the so far studied cold, essentially classical regime to the ultracold, quantum regime. The key aspect of this method is the use of Rydberg molecules to initialize the ultracold ion-atom scattering event. ...

[Phys. Rev. Lett. 120, 153401] Published Thu Apr 12, 2018

]]>We study the scattering of individual photons by a two-level system ultrastrongly coupled to a waveguide. The scattering is elastic for a broad range of couplings and can be described with an effective $U(1)$-symmetric Hamiltonian. This simple model allows the prediction of scattering resonance line s...

[Phys. Rev. Lett. 120, 153602] Published Thu Apr 12, 2018

]]>The electrical properties of a graphene bilayer can be tuned by stretching and rotating one of the bilayer’s sheets.

[Phys. Rev. Lett. 120, 156405] Published Thu Apr 12, 2018

]]>The dynamics of charge-ordered states is one of the key issues in underdoped cuprate high-temperature superconductors, but static short-range charge-order (CO) domains have been detected in almost all cuprates. We probe the dynamics across the CO (and structural) transition in ${\mathrm{La}}_{1.48}{\mathrm{Nd}}_{0.4}{\mathrm{Sr}}_{0.12}{\mathrm{CuO}}_{4}$ ...

[Phys. Rev. Lett. 120, 156602] Published Thu Apr 12, 2018

]]>We bring forth a consistent theory for the electron-mediated vibrational intermode coupling that clarifies the microscopic mechanism behind the vibrational relaxation of adsorbates on metal surfaces. Our analysis points out the inability of state-of-the-art nonadiabatic theories to quantitatively re...

[Phys. Rev. Lett. 120, 156804] Published Thu Apr 12, 2018

]]>Electric field effects on magnetism in metals have attracted widespread attention, but the microscopic mechanism is still controversial. We experimentally show the relevancy between the electric field effect on magnetism and on the electronic structure in Pt in a ferromagnetic state using element-sp...

[Phys. Rev. Lett. 120, 157203] Published Thu Apr 12, 2018

]]>We simulate the dynamics of a single-electron source, modeled as a quantum dot with on-site Coulomb interaction and tunnel coupling to an adjacent lead in time-dependent density-functional theory. Based on this system, we develop a time-nonlocal exchange-correlation potential by exploiting analogies...

[Phys. Rev. Lett. 120, 157701] Published Thu Apr 12, 2018

]]>We explore adiabatic pumping in the presence of a periodic drive, finding a new phase in which the topologically quantized pumped quantity is energy rather than charge. The topological invariant is given by the winding number of the micromotion with respect to time within each cycle, momentum, and a...

[Phys. Rev. Lett. 120, 150601] Published Wed Apr 11, 2018

]]>We report on the first global QCD analysis of the quark transversity distributions in the nucleon from semi-inclusive deep-inelastic scattering (SIDIS), using a new Monte Carlo method based on nested sampling and constraints on the isovector tensor charge ${g}_{T}$ from lattice QCD. A simultaneous fit to t...

[Phys. Rev. Lett. 120, 152502] Published Wed Apr 11, 2018

]]>We report the first experimental evidence of a controlled transition from the generation of periodic bursts of electromagnetic radiation into the continuous-wave regime of a cyclotron maser formed in magnetically confined nonequilibrium plasma. The kinetic cyclotron instability of the extraordinary ...

[Phys. Rev. Lett. 120, 155001] Published Wed Apr 11, 2018

]]>DIII-D experiments at low density (${n}_{e}\sim {10}^{19}\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{m}}^{-3}$) have directly measured whistler waves in the 100–200 MHz range excited by multi-MeV runaway electrons. Whistler activity is correlated with runaway intensity (hard x-ray emission level), occurs in novel discrete frequency bands, and exhibits nonlinear...

[Phys. Rev. Lett. 120, 155002] Published Wed Apr 11, 2018

]]>A new analysis technique allows researchers to extract atomic-resolution holographic images of materials using a transmission electron microscope.

[Phys. Rev. Lett. 120, 156101] Published Wed Apr 11, 2018

]]>Magnetic adsorbates on superconductors induce local bound states within the superconducting gap. These Yu-Shiba-Rusinov (YSR) states decay slowly away from the impurity compared to atomic orbitals, even in 3D bulk crystals. Here, we use scanning tunneling spectroscopy to investigate their hybridizat...

[Phys. Rev. Lett. 120, 156803] Published Wed Apr 11, 2018

]]>First-principles calculations predict that pure, metallic, superconducting Si allotropes could form at ambient pressures.

[Phys. Rev. Lett. 120, 157001] Published Wed Apr 11, 2018

]]>Materials that have hysteretic response to an external field are essential in modern information storage and processing technologies. A myriad of magnetization curves of several natural and artificial materials have previously been measured and each has found a particular mechanism that accounts for...

[Phys. Rev. Lett. 120, 157202] Published Wed Apr 11, 2018

]]>We present models of realistic globular clusters with post-Newtonian dynamics for black holes. By modeling the relativistic accelerations and gravitational-wave emission in isolated binaries and during three- and four-body encounters, we find that nearly half of all binary black hole mergers occur i...

[Phys. Rev. Lett. 120, 151101] Published Tue Apr 10, 2018

]]>The masses of ${}^{246}\mathrm{Es}$, ${}^{251}\mathrm{Fm}$, and the transfermium nuclei ${}^{249-252}\mathrm{Md}$ and ${}^{254}\mathrm{No}$, produced by hot- and cold-fusion reactions, in the vicinity of the deformed $N=152$ neutron shell closure, have been directly measured using a multireflection time-of-flight mass spectrograph. The masses of ${}^{246}\mathrm{Es}$ and ${}^{249,\mathrm{25...}}\mathrm{Md}$

[Phys. Rev. Lett. 120, 152501] Published Tue Apr 10, 2018

]]>Multistage coupling of laser-wakefield accelerators is essential to overcome laser energy depletion for high-energy applications such as TeV-level electron-positron colliders. Current staging schemes feed subsequent laser pulses into stages using plasma mirrors while controlling electron beam focusi...

[Phys. Rev. Lett. 120, 154801] Published Tue Apr 10, 2018

]]>A machine learning method is presented for constructing the interatomic potential of boron starting from just a single-point density functional theory computation.

[Phys. Rev. Lett. 120, 156001] Published Tue Apr 10, 2018

]]>The success of black phosphorus in fast electronic and photonic devices is hindered by its rapid degradation in the presence of oxygen. Orthorhombic tin selenide is a representative of group IV-VI binary compounds that are robust and isoelectronic and share the same structure with black phosphorus. ...

[Phys. Rev. Lett. 120, 156403] Published Tue Apr 10, 2018

]]>We study the temperature dependence of the electrical resistivity in a system composed of critical spin chains interacting with three-dimensional conduction electrons and driven to criticality via an external magnetic field. The relevant experimental system is ${\mathrm{Yb}}_{2}{\mathrm{Pt}}_{2}\mathrm{Pb}$, a metal where itinerant elect...

[Phys. Rev. Lett. 120, 156404] Published Tue Apr 10, 2018

]]>Edge theories of symmetry-protected topological phases are well known to possess global symmetry anomalies. In this Letter we focus on two-dimensional bosonic phases protected by an on-site symmetry and analyze the corresponding edge anomalies in more detail. Physical interpretations of the anomaly ...

[Phys. Rev. Lett. 120, 156601] Published Tue Apr 10, 2018

]]>One of the cornerstones for topological quantum computations is the Majorana zero mode, which has been intensively searched in fractional quantum Hall systems and topological superconductors. Several recent works suggest that such an exotic mode can also exist in a one-dimensional (1D) interacting d...

[Phys. Rev. Lett. 120, 156802] Published Tue Apr 10, 2018

]]>Recently, the frustrated $XY$ model for spins $1/2$ on the honeycomb lattice has attracted a lot of attention in relation with the possibility to realize a chiral spin liquid state. This model is relevant to the physics of some quantum magnets. Using the flexibility of ultracold atom setups, we propose ...

[Phys. Rev. Lett. 120, 157201] Published Tue Apr 10, 2018

]]>Quantum computation places very stringent demands on gate fidelities, and experimental implementations require both the controls and the resultant dynamics to conform to hardware-specific constraints. Superconducting qubits present the additional requirement that pulses must have simple parameteriza...

[Phys. Rev. Lett. 120, 150401] Published Mon Apr 09, 2018

]]>The sensing of external fields using quantum systems is a prime example of an emergent quantum technology. Generically, the sensitivity of a quantum sensor consisting of $N$ independent particles is proportional to $\sqrt{N}$. However, interactions invariably occurring at high densities lead to a breakdown of ...

[Phys. Rev. Lett. 120, 150501] Published Mon Apr 09, 2018

]]>A search for dark matter axions with unprecedented sensitivity tests a previously inaccessible parameter range for these hypothetical particles.

[Phys. Rev. Lett. 120, 151301] Published Mon Apr 09, 2018

]]>Precision spectroscopy of the hydrogen molecule is a test ground of quantum electrodynamics (QED), and it may serve for the determination of fundamental constants. Using a comb-locked cavity ring-down spectrometer, for the first time, we observed the Lamb-dip spectrum of the $R(1)$ line in the overton...

[Phys. Rev. Lett. 120, 153001] Published Mon Apr 09, 2018

]]>Weak transitions in the (2,0) overtone band of the hydrogen deuteride molecule at $\lambda =1.38\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mu \mathrm{m}$ were measured in saturated absorption using the technique of noise-immune cavity-enhanced optical heterodyne molecular spectroscopy. Narrow Doppler-free lines were interrogated with a spectroscopy laser lock...

[Phys. Rev. Lett. 120, 153002] Published Mon Apr 09, 2018

]]>We investigate the dynamics of a microwave-driven Josephson junction capacitively coupled to a lumped-element $LC$ oscillator. In the regime of driving where the Josephson junction can be approximated as a Kerr oscillator, this minimal nonlinear system has been previously shown to exhibit a bistabilit...

[Phys. Rev. Lett. 120, 153601] Published Mon Apr 09, 2018

]]>The coupled dynamics of the two-fluid model of superfluid ${}^{4}\mathrm{He}$ is numerically studied for quantum turbulence of the thermal counterflow in a square channel. We combine the vortex filament model of the superfluid and the Navier-Stokes equations of normal fluid. Simulations of the coupled dynamics show...

[Phys. Rev. Lett. 120, 155301] Published Mon Apr 09, 2018

]]>The density layering phenomenon originating from a free surface gives rise to the layerlike dynamics and stress heterogeneity in ultrathin Cu-Zr glassy films, which facilitates the occurrence of multistep relaxations in the timescale of computer simulations. Taking advantage of this condition, we tr...

[Phys. Rev. Lett. 120, 155501] Published Mon Apr 09, 2018

]]>