Anomalous dynamics in which local perturbations spread faster than diffusion are ubiquitously observed in the long-time behavior of a wide variety of systems. Here, the manner by which such systems evolve towards their asymptotic superdiffusive behavior is explored using the 1D Lévy walk of order $1\&...$

[Phys. Rev. Lett. 124, 140601] Published Mon Apr 06, 2020

]]>The Belle II experiment finds no ${Z}^{\prime}$ boson in its first results, but it does constrain how strongly the particle might interact with standard model particles.

[Phys. Rev. Lett. 124, 141801] Published Mon Apr 06, 2020

]]>Frequency encoding of quantum information together with fiber and integrated photonic technologies can significantly reduce the complexity and resource requirements for realizing all-photonic quantum networks. The key challenge for such frequency domain processing of single photons is to realize coh...

[Phys. Rev. Lett. 124, 143601] Published Mon Apr 06, 2020

]]>We investigate the dynamics of a Bose-Einstein condensate interacting with two noninterfering and counterpropagating modes of a ring resonator. Superfluid, supersolid, and dynamic phases are identified experimentally and theoretically. The supersolid phase is obtained for sufficiently equal pump str...

[Phys. Rev. Lett. 124, 143602] Published Mon Apr 06, 2020

]]>Reactions in microfluidic systems may be intensified at flow intersections by vortex-induced hot spots.

[Phys. Rev. Lett. 124, 144501] Published Mon Apr 06, 2020

]]>The impact to fusion energy production due to the radiative loss from a localized mix in inertial confinement implosions using high density carbon capsule targets has been quantified. The radiative loss from the localized mix and local cooling of the reacting plasma conditions was quantified using n...

[Phys. Rev. Lett. 124, 145001] Published Mon Apr 06, 2020

]]>Black holes are known to launch powerful relativistic jets and emit highly variable gamma radiation. How these jets are loaded with plasma remains poorly understood. Spark gaps are thought to drive particle acceleration and pair creation in the black-hole magnetosphere. In this Letter, we perform 2D...

[Phys. Rev. Lett. 124, 145101] Published Mon Apr 06, 2020

]]>We report observation of electric field driven conductivity with negative differential conductance and resistive switching in insulating ${\mathrm{SrTiO}}_{3}$ samples over a wide range of applied voltages at low temperatures. The observed current follows $I={I}_{0}\mathrm{exp}[-{({E}^{*}/E)}^{1/2}]$ at large applied electric field, corresp...

[Phys. Rev. Lett. 124, 146601] Published Mon Apr 06, 2020

]]>A diamond crystal could become a superconductor with a transition temperature as high as 12K when subjected to compression and shear deformations.

[Phys. Rev. Lett. 124, 147001] Published Mon Apr 06, 2020

]]>The non-Abelian topological phase with Fibonacci anyons minimally supports universal quantum computation. In order to investigate the possible phase transitions out of the Fibonacci topological phase, we propose a generic quantum-net wave function with two tuning parameters dual with each other, and...

[Phys. Rev. Lett. 124, 130603] Published Fri Apr 03, 2020

]]>We present a Feynman integral representation for the general momentum-space scalar $n$-point function in any conformal field theory. This representation solves the conformal Ward identities and features an arbitrary function of $n(n-3)/2$ variables which play the role of momentum-space conformal cross r...

[Phys. Rev. Lett. 124, 131602] Published Fri Apr 03, 2020

]]>A search is presented for a narrow resonance decaying to a pair of oppositely charged muons using $\sqrt{s}=13\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{TeV}$ proton-proton collision data recorded at the LHC. In the 45–75 and 110–200 GeV resonance mass ranges, the search is based on conventional triggering and event reconstruction techniques. In the...

[Phys. Rev. Lett. 124, 131802] Published Fri Apr 03, 2020

]]>The existence of bulk nanobubbles has long been regarded with scepticism, due to the limitations of experimental techniques and the widespread assumption that spherical bubbles cannot achieve stable equilibrium. We develop a model for the stability of bulk nanobubbles based on the experimental obser...

[Phys. Rev. Lett. 124, 134503] Published Fri Apr 03, 2020

]]>Many correlated metallic materials are described by Landau Fermi-liquid theory at low energies, but for Hund metals the Fermi-liquid coherence scale ${T}_{\mathrm{FL}}$ is found to be surprisingly small. In this Letter, we study the simplest impurity model relevant for Hund metals, the three-channel spin-orbital Ko...

[Phys. Rev. Lett. 124, 136406] Published Fri Apr 03, 2020

]]>We propose ${\mathrm{MnBi}}_{2n}{\mathrm{Te}}_{3n+1}$ as a magnetically tunable platform for realizing various symmetry-protected higher-order topology. Its canted antiferromagnetic phase can host exotic topological surface states with a Möbius twist that are protected by nonsymmorphic symmetry. Moreover, opposite surfaces hosti...

[Phys. Rev. Lett. 124, 136407] Published Fri Apr 03, 2020

]]>We show that mesoscopic coherent fluctuations of light propagating in random media induce fluctuating radiation forces. A hydrodynamic Langevin approach is used to describe the coherent light fluctuations, whose noise term accounts for mesoscopic coherent effects. This description—generalizable to o...

[Phys. Rev. Lett. 124, 136803] Published Fri Apr 03, 2020

]]>Sound waves generate large-amplitude spin waves that travel long distances in a magnetic film.

[Phys. Rev. Lett. 124, 137202] Published Fri Apr 03, 2020

]]>[Phys. Rev. Lett. 124, 139901] Published Fri Apr 03, 2020

]]>Disorder in quantum systems can lead to the disruption of long-range order in the ground state and to the localization of the elementary excitations. Here we exhibit an alternative paradigm, by which disorder preserves long-range order in the ground state, while it localizes the elementary excitatio...

[Phys. Rev. Lett. 124, 130604] Published Thu Apr 02, 2020

]]>Scattering processes are typically sensitive to the incident wave properties and to interference effects generated via wave-matter interactions with the target. We challenge this general belief in the case of targets that undergo time-periodic modulations encircling quasiadiabatically an exceptional...

[Phys. Rev. Lett. 124, 133905] Published Thu Apr 02, 2020

]]>A new experimental platform based on laser-plasma interaction is proposed to explore the fundamental processes of wave coupling at the origin of interplanetary radio emissions. It is applied to the study of electromagnetic (EM) emission at twice the plasma frequency ($2{\omega}_{p}$) observed during solar burst...

[Phys. Rev. Lett. 124, 135001] Published Thu Apr 02, 2020

]]>We elucidate the mechanism by which a Mott insulator transforms into a non-Fermi liquid metal upon increasing disorder at half filling. By correlating maps of the local density of states, the local magnetization, and the local bond conductivity, we find a collapse of the Mott gap toward a $\mathsf{V}$-shaped p...

[Phys. Rev. Lett. 124, 137402] Published Thu Apr 02, 2020

]]>Using only cosmic microwave background polarization data from the polarbear experiment, we measure $B$-mode polarization delensing on subdegree scales at more than $5\sigma $ significance. We achieve a 14% $B$-mode power variance reduction, the highest to date for internal delensing, and improve this result to ...

[Phys. Rev. Lett. 124, 131301] Published Wed Apr 01, 2020

]]>A search for millicharged particles, a simple extension of the standard model, has been performed with the ArgoNeuT detector exposed to the Neutrinos at the Main Injector beam at Fermilab. The ArgoNeuT liquid argon time projection chamber detector enables a search for millicharged particles through ...

[Phys. Rev. Lett. 124, 131801] Published Wed Apr 01, 2020

]]>Supercomputer simulations rule out a known quantum effect as the cause of the muon’s unexpectedly strong magnetic moment.

[Phys. Rev. Lett. 124, 132002] Published Wed Apr 01, 2020

]]>Experimental studies of fission induced in relativistic nuclear collisions show a systematic enhancement of the excitation energy of the primary fragments by a factor of $\sim 2$, before their decay by fission and other secondary fragments. Although it is widely accepted that by doubling the energies of t...

[Phys. Rev. Lett. 124, 132301] Published Wed Apr 01, 2020

]]>The two-particle momentum correlation function of a ${K}^{-}p$ pair from high-energy nuclear collisions is evaluated in the $\overline{K}N\text{\u2212}\pi \mathrm{\Sigma}\text{\u2212}\pi \mathrm{\Lambda}$ coupled-channel framework. The effects of all coupled channels together with the Coulomb potential and the threshold energy difference between ${K}^{-}p$ and ${\overline{K}}^{0}n$ are treated compl...

[Phys. Rev. Lett. 124, 132501] Published Wed Apr 01, 2020

]]>We present the first laser spectroscopic measurement of the neutron-rich nucleus ${}^{68}\mathrm{Ni}$ at the $N=40$ subshell closure and extract its nuclear charge radius. Since this is the only short-lived isotope for which the dipole polarizability ${\alpha}_{D}$ has been measured, the combination of these observables provides...

[Phys. Rev. Lett. 124, 132502] Published Wed Apr 01, 2020

]]>Starting from weakly bound Feshbach molecules, we demonstrate a two-photon pathway to the dipolar ground state of bi-alkali molecules that involves only singlet-to-singlet optical transitions. This pathway eliminates the search for a suitable intermediate state with sufficient singlet-triplet mixing...

[Phys. Rev. Lett. 124, 133203] Published Wed Apr 01, 2020

]]>Nonlinear coupling with a saturable absorber is used to couple and phase lock a large array of lasers, an arrangement which is more robust than the usual linear coupling.

[Phys. Rev. Lett. 124, 133901] Published Wed Apr 01, 2020

]]>Two-color table-top soft x-ray laser source is experimentally demonstrated using high density nickel-like plasma.

[Phys. Rev. Lett. 124, 133902] Published Wed Apr 01, 2020

]]>We study the fundamental limit on the localization precision for a subwavelength scatterer embedded in a strongly scattering environment, using the external degrees of freedom provided by wavefront shaping. For a weakly scattering target, the localization precision improves with the value of the loc...

[Phys. Rev. Lett. 124, 133903] Published Wed Apr 01, 2020

]]>The mid-infrared atmospheric window of $3\u20135.5\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mu \mathrm{m}$ holds valuable information regarding molecular composition and function for fundamental and applied spectroscopy. Using a robust, mode-locked fiber-laser source of $<11\text{\hspace{0.17em}\hspace{0.17em}}\mathrm{fs}$ pulses in the near infrared, we explore quadratic (${\chi}^{(2)}$) nonlinear optical p...

[Phys. Rev. Lett. 124, 133904] Published Wed Apr 01, 2020

]]>A new approach to image turbulent flow in cryogenic helium allows modeling processes in various coherent matter-wave systems that form Bose-Einstein condensates, such as neutron stars and galactic dark matter.

[Phys. Rev. Lett. 124, 134502] Published Wed Apr 01, 2020

]]>The effect of short-range disorder in nodal line semimetals is studied by numerically exact means. For arbitrary small disorder, a novel semimetallic phase is unveiled for which the momentum-space amplitude of the ground-state wave function is concentrated around the nodal line and follows a multifr...

[Phys. Rev. Lett. 124, 136405] Published Wed Apr 01, 2020

]]>Topological superconductivity supports exotic Majorana bound states (MBS) which are chargeless zero-energy emergent quasiparticles. With their non-Abelian exchange statistics and fractionalization of a single electron stored nonlocally as a spatially separated MBS, they are particularly suitable for...

[Phys. Rev. Lett. 124, 137001] Published Wed Apr 01, 2020

]]>We propose a new principle to realize flatbands which are robust in real materials, based on a network superstructure of one-dimensional segments. This mechanism is naturally realized in the nearly commensurate charge-density wave of $1\mathrm{T}\text{\u2212}{\mathrm{TaS}}_{2}$ with the honeycomb network of conducting domain walls, and...

[Phys. Rev. Lett. 124, 137002] Published Wed Apr 01, 2020

]]>A quantum machine-learning network can fix spin-flip errors in a manner analogous to classical data being denoised by an autoencoder.

[Phys. Rev. Lett. 124, 130502] Published Tue Mar 31, 2020

]]>Dynamical universality is the observation that the dynamical properties of different systems might exhibit universal behavior that are independent of the system details. In this Letter, we study the longtime dynamics of a one-dimensional noisy quantum magnetic model, and find that even though the sy...

[Phys. Rev. Lett. 124, 130602] Published Tue Mar 31, 2020

]]>We construct a class of $2+1$ dimensional relativistic quantum field theories which exhibit the fractional quantum Hall effect in the infrared, both in the continuum and on the lattice. The UV completion consists of a perturbative $U(1)\times U(1)$ gauge theory with integer-charged fields, while the low energ...

[Phys. Rev. Lett. 124, 131601] Published Tue Mar 31, 2020

]]>We report a measurement of the spin polarization of the recoiling neutron in deuterium photodisintegration, utilizing a new large acceptance polarimeter within the Crystal Ball at MAMI. The measured photon energy range of 300–700 MeV provides the first measurement of recoil neutron polarization at p...

[Phys. Rev. Lett. 124, 132001] Published Tue Mar 31, 2020

]]>A cycling transition in one dimension establishes a path to deep cooling of polyatomic molecules.

[Phys. Rev. Lett. 124, 133201] Published Tue Mar 31, 2020

]]>The spatially dependent phase distribution of focused few-cycle pulses, i.e., the focal phase, is much more complex than the well-known Gouy phase of monochromatic beams. As the focal phase is imprinted on the carrier-envelope phase (CEP), for accurate modeling and interpretation of CEP-dependent fe...

[Phys. Rev. Lett. 124, 133202] Published Tue Mar 31, 2020

]]>Rubidium Rydberg atoms in either $|{m}_{j}|$ sublevel of the $36{p}_{3/2}$ state can exchange energy via Stark-tuned Förster resonances, including two-, three-, and four-body dipole-dipole interactions. Three-body interactions of this type were first reported and categorized by Faoro *et al.* [Nat. Commun. **6**, 8173 ...

[Phys. Rev. Lett. 124, 133402] Published Tue Mar 31, 2020

]]>We derive a family of inequalities involving different phase-space distributions of a quantum state which have to be fulfilled by any classical state. The violation of these inequalities is a clear signature of nonclassicality. Our approach combines the characterization of nonclassical effects via n...

[Phys. Rev. Lett. 124, 133601] Published Tue Mar 31, 2020

]]>We present numerical evidence of a critical-like transition in an out-of-equilibrium mean-field description of a quantum system. By numerically solving the Gross-Pitaevskii equation we show that quantum turbulence displays an abrupt change between three-dimensional (3D) and two-dimensional (2D) beha...

[Phys. Rev. Lett. 124, 134501] Published Tue Mar 31, 2020

]]>A proposed design for plasma accelerators would use line-focused laser pulses to overcome the problem of particles outrunning the acceleration region.

[Phys. Rev. Lett. 124, 134802] Published Tue Mar 31, 2020

]]>We propose and demonstrate a novel scheme to produce ultrashort and ultrastable MeV electron beam. In this scheme, the electron beam produced in a photocathode radio frequency (rf) gun first expands under its own Coulomb force with which a positive energy chirp is imprinted in the beam longitudinal ...

[Phys. Rev. Lett. 124, 134803] Published Tue Mar 31, 2020

]]>A Luttinger liquid (LL) describes low energy excitations of many interacting one dimensional systems, and exhibits universal response both in and out of equilibrium. We analyze its behavior in the non-Hermitian realm after quantum quenching to a $\mathcal{PT}$-symmetric LL by focusing on the fermionic single pa...

[Phys. Rev. Lett. 124, 136802] Published Tue Mar 31, 2020

]]>Although metamaterials or metasurfaces consisting of patterned subwavelength structures have been widely employed for thermal emission control, the collective behavior of the emitter array in a metasurface still remains unclear. Here, based on the quasinormal mode theory, we derive a new scale law t...

[Phys. Rev. Lett. 124, 137401] Published Tue Mar 31, 2020

]]>The recognition that large classes of quantum many-body systems have limited entanglement in the ground and low-lying excited states led to dramatic advances in their numerical simulation via so-called tensor networks. However, global dynamics elevates many particles into excited states, and can lea...

[Phys. Rev. Lett. 124, 137701] Published Tue Mar 31, 2020

]]>Noise in quantum computing is countered with quantum error correction. Achieving optimal performance will require tailoring codes and decoding algorithms to account for features of realistic noise, such as the common situation where the noise is biased towards dephasing. Here we introduce an efficie...

[Phys. Rev. Lett. 124, 130501] Published Mon Mar 30, 2020

]]>We analyze work extraction from a qubit into a waveguide (WG) acting as a battery, where work is the coherent component of the energy radiated by the qubit. The process is stimulated by a wave packet whose mean photon number (the battery’s charge) can be adjusted. We show that the extracted work is ...

[Phys. Rev. Lett. 124, 130601] Published Mon Mar 30, 2020

]]>Because of the high energies and long distances to the sources, astrophysical observations provide a unique opportunity to test possible signatures of Lorentz invariance violation (LIV). Superluminal LIV enables the decay of photons at high energy. The high altitude water Cherenkov (HAWC) observator...

[Phys. Rev. Lett. 124, 131101] Published Mon Mar 30, 2020

]]>Radiative double-electron capture (RDEC) involves the transfer of two electrons with the simultaneous emission of a single photon. This process, which can be viewed as the inverse of double photoionzation, has been studied for $2.11\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{MeV}/\mathrm{u}$ ${\mathrm{F}}^{9+}$ and ${\mathrm{F}}^{8+}$ ions striking gas targets of ${\mathrm{N}}_{2}$ and Ne. The exist...

[Phys. Rev. Lett. 124, 133401] Published Mon Mar 30, 2020

]]>Researchers show that they can better shape an electron bunch by using a hollow laser beam, something that could allow them to generate brighter x rays for x-ray free-electron lasers.

[Phys. Rev. Lett. 124, 134801] Published Mon Mar 30, 2020

]]>We study a one-dimensional Fermi gas in the presence of dissipative coupling to environment through the Lindblad equation. The dissipation involves energy exchange with the environment and favours the relaxation of electrons to excitations. After switching on the dissipation, the system approaches a...

[Phys. Rev. Lett. 124, 136401] Published Mon Mar 30, 2020

]]>Employing high-pressure infrared spectroscopy we unveil the Weyl semimetal phase of elemental Te and its topological properties. The linear frequency dependence of the optical conductivity provides clear evidence for metallization of trigonal tellurium (Te-I) and the linear band dispersion above 3.0...

[Phys. Rev. Lett. 124, 136402] Published Mon Mar 30, 2020

]]>We investigate an effective model of proximity modified graphene (or symmetrylike materials) with broken time-reversal symmetry. We predict the appearance of quantum anomalous Hall phases by computing bulk band gap and Chern numbers for benchmark combinations of system parameters. Allowing for stagg...

[Phys. Rev. Lett. 124, 136403] Published Mon Mar 30, 2020

]]>The observation of radial spin texture in chiral tellurium crystals could lead to greater control over electron transport.

[Phys. Rev. Lett. 124, 136404] Published Mon Mar 30, 2020

]]>A geometrical approach provides a method to realize non-Fermi-liquid metals that are stable at low but accessible temperatures.

[Phys. Rev. Lett. 124, 136801] Published Mon Mar 30, 2020

]]>The ternary $A{\mathrm{MnBi}}_{2}$ ($A$ is alkaline as well as rare-earth atom) materials provide an arena for investigating the interplay between low-dimensional magnetism of the antiferromagnetic MnBi layers and the electronic states in the intercalated Bi layers, which harbor relativistic fermions. Here, we report...

[Phys. Rev. Lett. 124, 137201] Published Mon Mar 30, 2020

]]>We describe a Sagnac interferometer suitable for rotation sensing, implemented using an atomic Bose-Einstein condensate confined in a harmonic magnetic trap. The atom wave packets are split and recombined by standing-wave Bragg lasers, and the trapping potential steers the packets along circular tra...

[Phys. Rev. Lett. 124, 120403] Published Fri Mar 27, 2020

]]>Physical systems close to a quantum phase transition exhibit a divergent susceptibility, suggesting that an arbitrarily high precision may be achieved by exploiting quantum critical systems as probes to estimate a physical parameter. However, such an improvement in sensitivity is counterbalanced by ...

[Phys. Rev. Lett. 124, 120504] Published Fri Mar 27, 2020

]]>Supersymmetric twin Higgs models have a discrete symmetry for which each standard model particle and its supersymmetric partner have a corresponding state that transforms under a mirror standard model gauge group. This framework is able to accommodate the nondiscovery of new particles at the LHC wit...

[Phys. Rev. Lett. 124, 121803] Published Fri Mar 27, 2020

]]>We report on a new measurement of the beam transverse single spin asymmetry in electron-proton elastic scattering, ${A}_{\perp}^{ep}$, at five beam energies from 315.1 to 1508.4 MeV and at a scattering angle of $30\xb0<\theta <40\xb0$. The covered ${Q}^{2}$ values are 0.032, 0.057, 0.082, 0.218, 0.613 $(\mathrm{GeV}/c{)}^{2}$. The measurement ...

[Phys. Rev. Lett. 124, 122003] Published Fri Mar 27, 2020

]]>We study, for the first time, the effects of strong short-range electron-electron interactions in generic Rarita-Schwinger-Weyl semimetals hosting spin-$3/2$ electrons with linear dispersion at a fourfold band crossing point. The emergence of this novel quasiparticle, which is absent in high-energy ph...

[Phys. Rev. Lett. 124, 127602] Published Fri Mar 27, 2020

]]>We demonstrate the trapping of electrons propagating ballistically at far-above-equilibrium energies in GaAs/AlGaAs heterostructures in high magnetic field. We find low-loss transport along a gate-modified mesa edge in contrast to an effective decay of excess energy for the loop around a neighboring...

[Phys. Rev. Lett. 124, 127701] Published Fri Mar 27, 2020

]]>Friction at the walls of a cylinder can generate a downward force, resulting in an apparent weight increase of the particles inside.

[Phys. Rev. Lett. 124, 128002] Published Fri Mar 27, 2020

]]>[Phys. Rev. Lett. 124, 129903] Published Fri Mar 27, 2020

]]>We show—both theoretically and experimentally—that Einstein-Podolsky-Rosen steering can be distilled. We present a distillation protocol that outputs a perfectly correlated system—the singlet assemblage—in the asymptotic infinite-copy limit, even for inputs that are arbitrarily close to being unstee...

[Phys. Rev. Lett. 124, 120402] Published Thu Mar 26, 2020

]]>We investigate a quantum many-body lattice system of one-dimensional spinless fermions interacting with a dynamical ${Z}_{2}$ gauge field. The gauge field mediates long-range attraction between fermions resulting in their confinement into bosonic dimers. At strong coupling we develop an exactly solvable ef...

[Phys. Rev. Lett. 124, 120503] Published Thu Mar 26, 2020

]]>We propose a novel strategy to search for new physics in timing spectra at low-energy neutrino experiments using a pulsed beam, envisioning the situation in which a new particle comes from the decay of its heavier partner with a finite particle width. The timing distribution of events induced by the...

[Phys. Rev. Lett. 124, 121802] Published Thu Mar 26, 2020

]]>We report the first observation of the radiative decay of the $\mathrm{\Upsilon}(1S)$ into a charmonium state. The significance of the observed signal of $\mathrm{\Upsilon}(1S)\to \gamma {\chi}_{c1}$ is 6.3 standard deviations including systematics. The branching fraction is calculated to be $\mathcal{B}[\mathrm{\Upsilon}(1S)\to \gamma {\chi}_{c1}]=[{4.7}_{-1.8}^{+2.4}(\text{stat}{)}_{-0.5}^{+0.4}(\text{sys})\times {10}^{-5}]$. We also...

[Phys. Rev. Lett. 124, 122001] Published Thu Mar 26, 2020

]]>The ratio of the ${B}_{s}^{0}$ and ${B}^{+}$ fragmentation fractions ${f}_{s}$ and ${f}_{u}$ is studied with ${B}_{s}^{0}\to J/\psi \varphi $ and ${B}^{+}\to J/\psi {K}^{+}$ decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8, and 13 TeV center-of-mass energies. The analysis is performed in bins of $B$-meson momentum, longitudinal momentum...

[Phys. Rev. Lett. 124, 122002] Published Thu Mar 26, 2020

]]>New limits have been set on the neutrinoless double beta decay in ${}^{130}$Te from two years of data from the CUORE experiment.

[Phys. Rev. Lett. 124, 122501] Published Thu Mar 26, 2020

]]>Near-field hyperspectral imaging of quantum dot photoluminescence measures local density of states lineshapes providing evidence of their non-Lorentzian character, in agreement with numerical and theoretical predictions concerning the Purcell factor.

[Phys. Rev. Lett. 124, 123902] Published Thu Mar 26, 2020

]]>We investigate the underlying mechanism of capillary force balance at the contact line. In particular, we offer a novel approach to describe and quantify the capillary force on the liquid in coexistence with its vapor phase, which is crucial in wetting and spreading dynamics. Its relation with the i...

[Phys. Rev. Lett. 124, 125502] Published Thu Mar 26, 2020

]]>Negative thermal expansion is an unusual phenomenon appearing in only a handful of materials, but pursuit and mastery of the phenomenon holds great promise for applications across disciplines and industries. Here we report use of x-ray spectroscopy and diffraction to investigate the $4f$-electronic pr...

[Phys. Rev. Lett. 124, 125701] Published Thu Mar 26, 2020

]]>We construct a continuum model for the moiré superlattice of twisted bilayer ${\mathrm{MnBi}}_{2}{\mathrm{Te}}_{4}$, and study the band structure of the bilayer in both ferromagnetic (FM) and antiferromagnetic (AFM) phases. We find the system exhibits highly tunable Chern bands with Chern number up to 3. We show that a twist ang...

[Phys. Rev. Lett. 124, 126402] Published Thu Mar 26, 2020

]]>The acoustogalvanic effect is proposed as a nonlinear mechanism to generate a direct electric current by passing acoustic waves in Dirac and Weyl semimetals. Unlike the standard acoustoelectric effect, which relies on the sound-induced deformation potential and the corresponding electric field, the ...

[Phys. Rev. Lett. 124, 126602] Published Thu Mar 26, 2020

]]>A coaxial magnetic field through a topological insulator nanowire with a variable cross-section leads to novel magnetotransport features.

[Phys. Rev. Lett. 124, 126804] Published Thu Mar 26, 2020

]]>A new theory proposes an experimental approach to spotting fractons.

[Phys. Rev. Lett. 124, 127203] Published Thu Mar 26, 2020

]]>Magnetic hopfion is a three-dimensional (3D) topological soliton with novel spin structure that would enable exotic dynamics. Here, we study the current-driven 3D dynamics of a magnetic hopfion with a unit Hopf index in a frustrated magnet. Attributed to the spin Berry phase and symmetry of the hopf...

[Phys. Rev. Lett. 124, 127204] Published Thu Mar 26, 2020

]]>We have investigated the elastic response of a transverse Ising magnet ${\mathrm{CoNb}}_{2}{\mathrm{O}}_{6}$ by means of ultrasound velocity measurement. A huge elastic anomaly in the ${C}_{66}$ mode is observed near a quantum critical point when sweeping a magnetic field perpendicular to the Ising axis. This anomaly appears to become ...

[Phys. Rev. Lett. 124, 127205] Published Thu Mar 26, 2020

]]>Correlated electrons give rise to both exotic electronic and magnetic properties in rare-earth nickelates. Here we present evidence of the interfacial coupling between two nickelate systems, ${\mathrm{EuNiO}}_{3}$ (ENO) and ${\mathrm{LaNiO}}_{3}$ (LNO), with different electronic and magnetic properties but with compatible structur...

[Phys. Rev. Lett. 124, 127601] Published Thu Mar 26, 2020

]]>The discovery of magnetic protein provides a new understanding of a biocompass at the molecular level. However, the mechanism by which magnetic protein enables a biocompass is still under debate, mainly because of the absence of permanent magnetism in the magnetic protein at room temperature. Here, ...

[Phys. Rev. Lett. 124, 128101] Published Thu Mar 26, 2020

]]>[Phys. Rev. Lett. 124, 129902] Published Thu Mar 26, 2020

]]>We introduce a resource theory of channels relevant to communication via quantum channels, in which the set of constant channels—useless channels for communication tasks—are considered as free resources. We find that our theory with such a simple structure is useful to address central problems in qu...

[Phys. Rev. Lett. 124, 120502] Published Wed Mar 25, 2020

]]>We point out that the choice of phases in Gliozzi-Scherk-Olive projections can be accounted for by a choice of fermionic symmetry-protected topological phases on the world sheet of the string. This point of view not only easily explains why there are essentially two type II theories, but also predic...

[Phys. Rev. Lett. 124, 121601] Published Wed Mar 25, 2020

]]>The Linac coherent light source x-ray free-electron laser is a complex scientific apparatus which changes configurations multiple times per day, necessitating fast tuning strategies to reduce setup time for successive experiments. To this end, we employ a Bayesian approach to maximizing x-ray laser ...

[Phys. Rev. Lett. 124, 124801] Published Wed Mar 25, 2020

]]>The peak strength of a metal occurs when the boundaries between its grains and the grains themselves have the same strength.

[Phys. Rev. Lett. 124, 125501] Published Wed Mar 25, 2020

]]>The impact of intermixed donor-acceptor domains in organic bulk heterojunction (BHJ) solar cells, using low-donor-content devices as model systems, is clarified. At low donor contents, the devices are found to exhibit anomalously high open-circuit voltages independent of the donor-acceptor energetic...

[Phys. Rev. Lett. 124, 128001] Published Wed Mar 25, 2020

]]>Measurement incompatibility describes two or more quantum measurements whose expected joint outcome on a given system cannot be defined. This purely nonclassical phenomenon provides a necessary ingredient in many quantum information tasks such as violating a Bell inequality or nonlocally steering pa...

[Phys. Rev. Lett. 124, 120401] Published Tue Mar 24, 2020

]]>To realize fault-tolerant quantum computing, it is necessary to store quantum information in logical qubits with error correction functions, realized by distributing a logical state among multiple physical qubits or by encoding it in the Hilbert space of a high-dimensional system. Quantum gate opera...

[Phys. Rev. Lett. 124, 120501] Published Tue Mar 24, 2020

]]>We measure neutrino charged-current quasielasticlike scattering on hydrocarbon at high statistics using the wideband Neutrinos at the Main Injector beam with neutrino energy peaked at 6 GeV. The double-differential cross section is reported in terms of muon longitudinal (${p}_{\parallel}$) and transverse (${p}_{\perp}$) mome...

[Phys. Rev. Lett. 124, 121801] Published Tue Mar 24, 2020

]]>We propose and experimentally investigate a scheme for observing Feshbach resonances in atomic quantum gases *in situ* and with a high temporal resolution of several tens of nanoseconds. The method is based on the detection of molecular ions, which are optically generated from atom pairs at small inte...

[Phys. Rev. Lett. 124, 123401] Published Tue Mar 24, 2020

]]>Non-Hermiticity is known to manifest interesting modifications in the transport properties of complex systems. We report an intriguing regime of transport of hybrid quasiparticles in a non-Hermitian setting. We calculate the probability of transport, quantified by the Thouless conductance, of hybrid...

[Phys. Rev. Lett. 124, 123901] Published Tue Mar 24, 2020

]]>When energy in a cylindrical wave tank is fed into inertial waves only, then strong forcing generates geostrophic flow invariant along the rotation axis.

[Phys. Rev. Lett. 124, 124501] Published Tue Mar 24, 2020

]]>Two-dimensional (2D) antimony, so-called antimonene, can form antimonene oxide when exposed to air. We present different types of single- and few-layer antimony oxide structures, based on density functional theory (DFT) calculations. Depending on stoichiometry and bonding type, these novel 2D layers...

[Phys. Rev. Lett. 124, 126101] Published Tue Mar 24, 2020

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