Latest in cond-mat

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Thermodynamics of a one-dimensional Bose gas with repulsive contact interactionsMay 17 2019We present a thorough study of the thermodynamics of a one-dimensional repulsive Bose gas, focusing in particular on corrections beyond the Luttinger-liquid description. We compute the chemical potential, the pressure and the contact, as a function of ... More
Avalanches, thresholds, and diffusion in meso-scale amorphous plasticityMay 17 2019We present results on a meso-scale model for amorphous matter in athermal, quasi-static (a-AQS), steady state shear flow. In particular, we perform a careful analysis of the scaling with the lateral system size, $L$, of: i) statistics of individual relaxation ... More
Symmetry-protected metallic and topological phases in penta-materialsMay 17 2019We analyze the symmetry and topological features of a family of materials closely related to penta-graphene, derived from it by adsorption or substitution of different atoms. Our description is based on a novel approach, called topological quantum chemistry, ... More
Work fluctuations in slow processes: quantum signatures and optimal controlMay 17 2019An important result in classical stochastic thermodynamics is the work fluctuation-dissipation relation (FDR), which states that the dissipated work done along a slow process is proportional to the resulting work fluctuations. Here we show that slowly ... More
Fractional Langevin equation from damped bath dynamicsMay 17 2019We consider the stochastic dynamics of a system linearly coupled to a hierarchical thermal bath with two well-separated inherent timescales: one slow, and one fast. The slow part of the bath is modeled as a set of harmonic oscillators and taken into account ... More
Understanding the correlation between electronic coupling and energetic stability of molecular crystal polymorphs: The instructive case of quinacridoneMay 17 2019A crucial factor determining charge transport in organic semiconductors is the electronic coupling between the molecular constituents, which is heavily influenced by the relative arrangement of the molecules. This renders quinacridone, with its multiple, ... More
Nucleation of Spatio-Temporal Structures From Defect Turbulence in the Two-dimensional Complex Ginzburg-Landau EquationMay 17 2019We numerically investigate nucleation processes in the transient dynamics of the two-dimensional complex Ginzburg-Landau equation towards its "frozen" state with stationary spiral structures. We study the transition kinetics from either the defect turbulence ... More
Novel MAB phases and insights into their exfoliation into 2D MBenesMay 17 2019Considering the recent breakthroughs in the synthesis of novel two-dimensional (2D) materials from layered bulk structures, ternary layered transition metal borides, known as MAB phases, have come under scrutiny as a means of obtaining novel 2D transition ... More
Magnetism of the diluted Ising antiferromagnet in a magnetic field on the Kagome lattice: single-spin cluster approximationMay 17 2019An effective-field theory based on the single-spin cluster has been used to study of a diluted spin-$1/2$ Ising antiferromagnet on the Kagome lattice with nearest-neighbor interactions. We observe five plateaus in the magnetization curve of the diluted ... More
The role of surface roughness on the effective interactions and phase behaviour of calcium carbonate nanoparticlesMay 17 2019The stability of nanoparticle suspensions is determined by a subtle interplay of particle-particle and particle-solvent interactions. Experimental studies of suspensions of calcite nanoparticles have reported formation of gels, hence providing evidence ... More
Continuous magnetic phase transition in artificial square iceMay 17 2019Critical behavior is very common in many fields of science and a wide variety of many-body systems exhibit emergent critical phenomena. The beauty of critical phase transitions lies in their scale-free properties, such that the temperature dependence ... More
An Experimental and Theoretical Insights into the Colossal Permittivity Mechanism of (Li, Nd) Co-doped ZnO CeramicsMay 17 2019In this work, we report the combined effect of donor (Nd) and acceptor (Li) co-doping at the Zn-site of ZnO ceramics on structural, microstructural and dielectric properties. Combining experimental observations with DFT based theoretical study, we have ... More
Statics and Dynamics of Polymeric Droplets on Chemically Homogeneous and Heterogeneous SubstratesMay 17 2019We present a molecular dynamics study of the motion of cylindrical polymer droplets on striped surfaces. We first consider the equilibrium properties of droplets on different surfaces, we show that for small stripes the Cassie-Baxter equation gives a ... More
Elastic scattering of three ultracold bosonsMay 17 2019Elastic scattering of three bosons at low energy is a fundamental problem in the many-body description of ultracold Bose gases, entering via the three-body scattering hypervolume $D$. We study this quantity for identical bosons that interact via a pairwise ... More
Brownian Molecules Formed by Delayed Harmonic InteractionsMay 17 2019A time-delayed response of individual living organisms to information exchange within flocks or swarms leads to the formation of complex collective behaviors. A recent experimental setup by Khadka et al., Nat. Commun. 9, 3864 (2018), employing synthetic ... More
Origin of sawtooth domain walls in ferroelectricsMay 17 2019Domains and domain walls are among the key factors that determine the performance of ferroelectric materials. In recent years, a unique type of domain walls, i.e., the sawtooth shaped domain walls, has been observed in BiFeO$_{3}$ and PbTiO$_{3}$. Here, ... More
Extended magnetic dome induced by low pressures in superconducting FeSe$_\mathrm{1\text{-}x}$S$_\mathrm{x}$May 17 2019We report muon spin rotation ($\mu$SR) and magnetization measurements under pressure on Fe$_{1+\delta}$Se$_\mathrm{1\text{-}x}$S$_\mathrm{x}$ with x $\approx 0.11$. We find an extended dome of long range magnetic order above $p\approx0.6$ GPa spanning ... More
Colossal infrared and terahertz magneto-optical activity in a two-dimensional Dirac materialMay 17 2019When two-dimensional electron gases (2DEGs) are exposed to magnetic field, they resonantly absorb electromagnetic radiation via electronic transitions between Landau levels (LLs). In 2DEGs with a Dirac spectrum, such as graphene, theory predicts an exceptionally ... More
Probing charge carrier movement in organic semiconductor thin films via nanowire conductance spectroscopyMay 17 2019Understanding the movement of charge within organic semiconducting films is crucial for applications in photo-voltaics and flexible electronics. We study the sensitivity of the electrical conductance of a silicon nanowire to changes of charge states within ... More
Visualizing Topology of Real-Energy Gapless Phase Arising from Exceptional PointMay 17 2019The discovery of novel topological phase advances our knowledge of nature and stimulates the development of applications. In non-Hermitian topological systems, the topology of band touching exceptional points is very important. Here we propose a real-energy ... More
Two-dimensional active motionMay 17 2019The diffusion in two dimensions of non-interacting active particles that follow an arbitrary motility pattern is considered for analysis. Accordingly, the transport equation is generalized to take into account an arbitrary distribution of scattered angles ... More
Spin coherent quantum transport of electrons between defects in diamondMay 17 2019The nitrogen-vacancy color center in diamond has rapidly emerged as an important solid-state system for quantum information processing. While individual spin registers have been used to implement small-scale diamond quantum computing, the realization ... More
Quantum transport in non-Hermitian impurity arrayMay 17 2019We study the formation of band gap bound states induced by a non-Hermitian impurity embedded in a Hermitian system. We show that a pair of bound states emerges inside the band gap when a parity-time ($\mathcal{PT}$) imaginary potential is added in a strongly ... More
Quantum Spin LiquidsMay 16 2019Spin liquids are quantum phases of matter that exhibit a variety of novel features associated with their topological character. These include various forms of fractionalization - elementary excitations that behave as fractions of an electron. While there ... More
Freezing point depression and freeze-thaw damage by nano-fuidic salt trappingMay 16 2019A remarkable variety of organisms and wet materials are able to endure temperatures far below the freezing point of bulk water. Cryo-tolerance in biology is usually attributed to "anti-freeze" proteins, and yet massive supercooling ($< -40^\circ$C) is ... More
A Proof that Multiple Waves Propagate in Ensemble-Averaged Particulate MaterialsMay 16 2019Effective medium theory describes an inhomogeneous material with macroscopic parameters. To characterise wave propagation through an inhomogeneous material, the most crucial parameter is the effective wavenumber. The most successful methods to calculate ... More
An efficient general methodology to explore the high-temperature frontier in f-block molecular nanomagnetsMay 16 2019One of the main roadblocks that still hampers the practical use of molecular magnets is their cryogenic working temperature. In the pursuit of rational strategies to design new nanomagnets with increasing blocking temperature, ab initio methodologies ... More
Plastic-crystalline solid-state electrolytes: Ionic conductivity and orientational dynamics in nitrile mixturesMay 16 2019Many plastic crystals, molecular solids with long-range, center-of-mass crystalline order but dynamic disorder of the molecular orientations, are known to exhibit exceptionally high ionic conductivity. This makes them promising candidates for applications ... More
Jamming and Tiling in Fragmentation of RectanglesMay 16 2019We investigate a stochastic process where a rectangle breaks into smaller rectangles through a series of horizontal and vertical fragmentation events. We focus on the case where both the vertical size and the horizontal size of a rectangle are discrete ... More
Error generation and propagation in Majorana-based topological qubitsMay 16 2019We investigate dynamical evolution of a topological memory that consists of two $p$-wave superconducting wires separated by a non-topological junction, focusing on the primary errors (i.e., qubit-loss) and secondary errors (bit and phase-flip) that arise ... More
The one-dimensional Bose-Fermi-Hubbard model in the limit of fast fermionsMay 16 2019We discuss the ground-state phase diagram of the one-dimensional Bose-Fermi-Hubbard model (BFHM) in the limit of fast fermions based on an effective boson model. We give a detailed derivation of the effective model with long-range RKKY-type interactions, ... More
Crystal growth and characterization of the antiperovskite superconductor MgC1-xNi3-yMay 16 2019By varying the parameters controlling the growth of crystals, including the thermodynamic variables, such as temperature, pressure, and reagent composition and the kinetic factors, namely reaction time and cooling rate, we found the most appropriate conditions ... More
Unveiling the vortex glass phase in the surface and volume of a type-II superconductorMay 16 2019Order-disorder transitions between glassy phases are quite common in nature and yet a comprehensive survey of the microscopic structural changes remains elusive since the scale of the constituents is tiny and in most cases few of them take part in the ... More
Coexistence of ferromagnetic fluctuations and superconductivity in the actinide superconductor UTe2May 16 2019We report low-temperature muon spin relaxation/rotation (muSR) measurements on single crystals of the actinide superconductor UTe2. Below 5 K we observe a continuous slowing down of magnetic fluctuations, which persists through the superconducting transition ... More
Excitons in two-dimensional atomic layer materials from time-dependent density functional theoryMay 16 2019Time-dependent density functional theory (TDDFT) has been applied to the calculation of absorption spectra for two-dimensional atomic layer materials. We reveal that the character of the first bright exciton state of bi-layer hexagonal boron nitride (h-BN) ... More
Competition between canted antiferromagnetic and spin-polarized quantum Hall states at $ν$ = 0 in graphene on a ferrimagnetic insulatorMay 16 2019The $\nu$ = 0 quantum Hall state in graphene has attracted experimental and theoretical interest. Graphene supports four zero-energy Landau levels which are described by spin and valley degeneracies. These lead to a number of approximately degenerate ... More
Trapping laser excitation during collisions limits the lifetime of ultracold moleculesMay 16 2019The lifetime of nonreactive ultracold bialkali gases was thought to be limited by sticky collisions that amplify three-body loss. We show that the sticking times were previously overestimated and cannot explain the observed loss. Instead, we consider ... More
Quantifying the Plasmonic Character of Optical Excitations in a Molecular J-AggregateMay 16 2019The definition of plasmon at the microscopic scale is far from being understood. Yet, it is very important to recognize plasmonic features in optical excitations, as they can inspire new applications and trigger new discoveries by analogy with the rich ... More
Outstanding strength, optical characteristics and thermal conductivity of graphene-like BC$_3$ and BC$_6$N semiconductorsMay 16 2019Carbon based two-dimensional (2D) materials with honeycomb lattices, like graphene, polyaniline carbon-nitride (C$_3$N) and boron-carbide (BC$_3$) exhibit exceptional physical properties. On this basis, we propose two novel graphene-like materials with ... More
Yang-Baxter random fields and stochastic vertex modelsMay 16 2019Bijectivization refines the Yang-Baxter equation into a pair of local Markov moves which randomly update the configuration of the vertex model. Employing this approach, we introduce new Yang-Baxter random fields of Young diagrams based on spin $q$-Whittaker ... More
Re-entrant motility induced phase separation in nematically aligning active polar particlesMay 16 2019We present a numerical study of the phase behavior of repulsively interacting active polar particles that align their active velocities nematically. The amplitude of the active velocity, and the noise in its orientational alignment control the active ... More
Non-equilibrium probability flux of a thermally driven micromachineMay 16 2019We discuss the non-equilibrium statistical mechanics of a thermally driven micromachine consisting of three spheres and two harmonic springs [Y. Hosaka et al., J. Phys. Soc. Jpn. 86 (2017)]. We obtain the non-equilibrium steady state probability distribution ... More
Ultra-compact photodetection in atomically thin MoSe$_2$May 16 2019Excitons in atomically-thin semiconductors interact very strongly with electromagnetic radiation and are necessarily close to a surface. Here, we exploit the deep-subwavelength confinement of surface plasmon polaritons (SPPs) at the edge of a metal-insulator-metal ... More
Phase behavior of flexible and semiflexible polymers in solvents of varying qualityMay 16 2019The interplay of nematic order and phase separation in solutions of semiflexible polymers in solvents of variable quality is investigated by density functional theory (DFT) and molecular dynamics (MD) simulations. We studied coarse-grained models, with ... More
Functional Form of the Superconducting Critical Temperature from Machine LearningMay 16 2019Predicting the critical temperature $T_c$ of new superconductors is a notoriously difficult task, even for electron-phonon paired superconductors for which the theory is relatively well understood. Early attempts by McMillan and Allen and Dynes to improve ... More
Dimensional crossover and topological nature of the thin films of a three-dimensional topological insulator by band gap engineeringMay 16 2019Identification and control of topological phases in topological thin films offer great opportunity for fundamental research and the fabrication of topology-based devices. Here, combining molecular beam epitaxy, angle-resolved photoemission spectroscopy ... More
Direct visualization of dynamic magnetic coupling in a Co/Py double layer with ps and nm resolutionMay 16 2019We present a combination of ferromagnetic resonance (FMR) with spatially and time-resolved X-ray absorption spectroscopy in a scanning transmission X-ray microscope (STXM). This allows the direct measurement of the high-frequency component of the precessing ... More
Signatures for spinons in the quantum spin liquid candidate Ca$_{10}$Cr$_7$O$_{28}$May 16 2019We present new experimental low-temperature heat capacity and detailed dynamical spin-structure factor data for the quantum spin liquid candidate material Ca$_{10}$Cr$_7$O$_{28}$. The measured heat capacity shows an almost perfect linear temperature dependence ... More
Protocol for a resonantly-driven three-qubit Toffoli gate with silicon spin qubitsMay 16 2019The three-qubit Toffoli gate plays an important role in quantum error correction and complex quantum algorithms such as Shor's factoring algorithm, motivating the search for efficient implementations of this gate. Here we introduce a Toffoli gate suitable ... More
Three-dimensional topological magnon systemsMay 16 2019We propose a class of models for a magnonic analog of topological insulators in three dimensions. The models have pseudo-time-reversal symmetry which ensures the existence of bosonic Kramers pairs. We define a set of $\mathbb{Z}_2$ topological invariants ... More
Exact relaxation dynamics and quantum information scrambling in multiply quenched harmonic chainsMay 16 2019The quantum dynamics of isolated systems under quench condition exhibits a variety of interesting features depending on the integrable/chaotic nature of system. We study the exact dynamics of trivially integrable system of harmonic chains under a multiple ... More
Beamed UV sonoluminescence by aspherical air bubble collapse near liquid-metal microparticlesMay 16 2019Irradiation with UV-C band ultraviolet light is one of the most commonly used ways of disinfecting water contaminated by pathogens such as bacteria and viruses. Sonoluminescence, the emission of light from acoustically-induced collapse of air bubbles ... More
Thickness-dependent electron momentum relaxation times in thin iron filmsMay 16 2019Terahertz time-domain conductivity measurements in 2 to 100 nm thick iron films resolve the femtosecond time delay between applied electric fields and resulting currents. This response time decreases for thinner metal films. The macroscopic response time ... More
Influence of clamp-widening on the quality factor of nanomechanical silicon nitride resonatorsMay 16 2019Nanomechanical resonators based on strained silicon nitride (Si3N4) have received a large amount of attention in fields such as sensing and quantum optomechanics due to their exceptionally high quality factors (Qs). Room-temperature Qs approaching 1 billion ... More
Plasmons in two-dimensional lattices of near-field coupled nanoparticlesMay 16 2019We consider plasmonic metasurfaces constituted by an arbitrary periodic arrangement of spherical metallic nanoparticles. Each nanoparticle supports three degenerate dipolar localized surface plasmon (LSP) resonances. In the regime where the interparticle ... More
Phase composition and transformations in magnetron-sputtered (Al,V)2O3 coatingsMay 16 2019Coatings of (Al1-xVx)2O3, with x ranging from 0 to 1, were deposited by pulsed DC reactive sputter deposition on Si(100) at a temperature of 550 {\deg}C. XRD showed three different crystal structures depending on V-metal fraction in the coating: {\alpha}-V2O3 ... More
Anisotropic gradient driven domain wall motion in antiferromagnetsMay 16 2019Searching for new energy-saving method of controlling antiferromagnetic (AFM) domain wall is one of the most important issues for AFM spintronic device design. In this work, we study theoretically and numerically the domain wall motion in AFM nanowires ... More
A Perspective on Conventional High-Temperature Superconductors at High Pressure: Methods and MaterialsMay 16 2019Two hydrogen-rich materials: H$_3$S and LaH$_{10}$, synthesized at $megabar$ pressures have revolutionized the field of superconductivity by providing a first glimpse into the solution for the hundred-year-old problem of room-temperature superconductivity. ... More
A quasiclassical method for calculating the density of states of ultracold collision complexesMay 16 2019We derive a quasiclassical expression for the density of states (DOS) of an arbitrary, ultracold, N-atom collision complex, for a general potential energy surface (PES). We establish the accuracy of our quasiclassical method by comparing to exact quantum ... More
The low-temperature phase in the two-dimensional long-range diluted XY modelMay 16 2019The critical behaviour of statistical models with long-range interactions exhibits distinct regimes as a function of $\rho$, the power of the interaction strength decay. For $\rho$ large enough, $\rho>\rho_{\rm sr}$, the critical behaviour is observed ... More
Quench dynamics of two component dipolar Fermions in a Quasiperiodic potentialMay 16 2019Motivated by the recent experiments in fermionic polar gases, we study quench dynamics of two component dipolar fermions, in presence and absence of quasiperiodic potential. We investigate the localization of charge and spin degree of freedom separately, ... More
Dramatic effects of vacancies on phonon lifetime and thermal conductivity in grapheneMay 16 2019Understanding thermal transport in 2D materials and especially in graphene is a key challenge for the design of heat management and energy conversion devices. The high sensitivity of measured transport properties to structural defects, ripples and vacancies ... More
Distinct fingerprints of charge density waves and electronic standing waves in ZrTe$_3$May 16 2019Experimental signatures of charge density waves (CDW) in high-temperature superconductors have evoked much recent interest, yet an alternative interpretation has been theoretically raised based on electronic standing waves resulting from quasiparticles ... More
Excitonic magneto-optics in monolayer transition metal dichalcogenides: From nanoribbons to two-dimensional responseMay 16 2019The magneto-optical response of monolayer transition metal dichalcogenides (TMDs), including excitonic effects, is studied using a nanoribbon geometry. We compute the diagonal optical conductivity and the Hall conductivity. Comparing the excitonic optical ... More
More current with less particles due to power-law hoppingMay 16 2019We show that the simple model of an ordered one-dimensional non-interacting system with power-law hopping has extremely interesting transport properties. We restrict ourselves to the case where the power-law decay exponent $\alpha>1$, so that the thermodynamic ... More
Phase space analysis of quantum transport in grapheneMay 16 2019Prominent among the many fascinating properties of graphene are its surprising electronic transport characteristics which are commonly studied theoretically and numerically within the Landauer-B\"uttiker formalism. Here a device is characterized by its ... More
Driving an electrolyte through a corrugated nanoporeMay 16 2019We characterize the dynamics of a $z-z$ electrolyte embedded in a varying-section channel. In the linear response regime, by means of suitable approximations, we derive the Onsager matrix associated to externally enforced gradients in electrostatic potential, ... More
Tunable Electronic, Optical and Transport Properties of Two Dimensional GaS Doped with Group II and Group IVa ElementsMay 16 2019In this present study, we systematically investigated the structural, electronic, optical and transport properties of pristine and group II, group IVa doped GaS monolayers using density functional theory (DFT). The strong formation energy suggests realization ... More
Electrical control of spins and giant g-factors in ring-like coupled quantum dotsMay 16 2019Emerging theoretical concepts for quantum technologies have driven a continuous search for structures where a quantum state, such as spin, can be manipulated efficiently. Central to many concepts is the ability to control a system by electric and magnetic ... More
Pressure-induced quantum critical point in a heavily hydrogen-doped iron-based superconductor LaFeAsOMay 16 2019An iron-based superconductor LaFeAsO$_{1-x}$H$_x$ (0 $\leq x \leq$ 0.6) undergoes two antiferromagnetic (AF) phases upon H doping. We investigated the second AF phase ($x$=0.6) using NMR techniques under pressure. At pressures up to 2 GPa, the ground ... More
Tuning the work function of graphene toward application as anode and cathodeMay 16 2019The rapid technological progress in the 21st century demands new multi-functional materials applicable to a wide variety of industries. Two-dimensional (2D) materials are predicted to have a revolutionary impact on the cost, size, weight, and functions ... More
Dynamic response of spin-2 bosons in one-dimensional optical latticesMay 16 2019We investigate the spin-2 chain model corresponding to the small hopping limit of the spin-2 Bose-Hubbard model using density-matrix-renormalization-group and time-evolution techniques. We calculate both static correlation functions and the dynamic structure ... More
Application of Onsager Machlup integral in solving dynamic equations in non-equilibrium systemsMay 16 2019In 1931, Onsager proposed a variational principle which has become the base of many kinetic equations for non-equilibrium systems. We have been showing that this principle is useful in obtaining approximate solutions for the kinetic equations, but our ... More
Tunable Correlated Chern Insulator and Ferromagnetism in Trilayer Graphene/Boron Nitride Moiré SuperlatticeMay 16 2019Studies on two-dimensional electron systems in a strong magnetic field first revealed the quantum Hall (QH) effect, a topological state of matter featuring a finite Chern number (C) and chiral edge states. Haldane later theorized that Chern insulators ... More
Superconductivity in Uncollapsed Tetragonal LaFe2As2May 16 2019We report synthesis, crystal structure and superconductivity in ThCr2Si2-type LaFe2As2 (La122). La122 was synthesized at 960{\deg}C for 1.5 h under a pressure of 3.4 GPa. An as-synthesized La122 (non-superconductor) had a collapsed tetragonal structure ... More
Efficiency limits of the three-sphere swimmerMay 16 2019We consider a swimmer consisting of a collinear assembly of three spheres connected by two slender rods. This swimmer can propel itself forward by varying the lengths of the rods in a way that is not invariant under time reversal. Although any non-reciprocal ... More
Enhanced Superconductivity in Monolayer $T_d$-MoTe$_2$ with Tilted Ising Spin TextureMay 16 2019Crystalline two-dimensional (2D) superconductors with low carrier density are an exciting new class of materials in which superconductivity coexists with strong interactions, the effects of complex topology are not obscured by disorder, and electronic ... More
Large enhancement of the effective second-order nonlinearity in graphene metasurfacesMay 16 2019Using a powerful homogenization technique, one- and two-dimensional graphene metasurfaces are homogenized both at the fundamental frequency (FF) and second harmonic (SH). In both cases, there is excellent agreement between the predictions of the homogenization ... More
Thermal Hall conductance and a relative topological invariant of gapped two-dimensional systemsMay 16 2019We show that derivatives of thermal Hall conductance of a 2d lattice quantum system with respect to parameters of the Hamiltonian are well-defined bulk quantities provided correlators of local observables are short-range. This is despite the fact that ... More
Observing topological charges and dynamical bulk-surface correspondence with ultracold atomsMay 16 2019In quenching a topological phase across phase transition, the dynamical bulk-surface correspondence emerges that the bulk topology of $d$-dimensional ($d$D) phase relates to the nontrivial pattern of quench dynamics emerging on $(d-1)$D subspace, called ... More
Doping induced Mott collapse and the density wave instabilities in (Sr$_{1-x}$La$_x$)$_3$Ir$_2$O$_7$May 15 2019The path from a Mott insulating phase to high temperature superconductivity encounters a rich set of unconventional phenomena involving the insulator-to-metal transition (IMT) such as emergent electronic orders and pseudogaps that ultimately affect the ... More
Voltage gated inter-cation selective ion channels from graphene nanoporesMay 15 2019With the ability to selectively control ionic flux, biological protein ion channels perform a fundamental role in many physiological processes. For practical applications that require the functionality of a biological ion channel, graphene provides a ... More
Crack formation and self-closing in shrinkable, granular packingsMay 15 2019Many clays, soils, biological tissues, foods, and coatings are shrinkable, granular materials: they are composed of packed, hydrated grains that shrink when dried. In many cases, these packings crack during drying, critically hindering applications. However, ... More
Using Acoustic Perturbations to Dynamically Tune Shear Thickening in Colloidal SuspensionsMay 15 2019Colloidal suspensions in industrial processes often exhibit shear thickening that is difficult to control actively. Here, we use piezoelectric transducers to apply acoustic perturbations to dynamically tune the suspension viscosity in the shear-thickening ... More
Quantum Non-demolition Measurement of a Many-Body HamiltonianMay 15 2019An ideal quantum measurement collapses the wave function of a quantum system to an eigenstate of the measured observable, with the corresponding eigenvalue determining the measurement outcome. For a quantum non-demolition (QND) observable, i.e., one that ... More
Impact of Electrostatic Doping Level On Dissipative Carrier Transport In GNR TFET DevicesMay 15 2019The impact of electrostatic doping level on the dissipative transport of Armchair GNR-TFET is studied using the Quantum Perturbation Theory (QPT) with the Extended Lowest Order Expansion (XLOE) implementation method. Results show that the doping level ... More
Irreversible aspects of nanoscale frictionMay 15 2019Developing the non-equilibrium thermodynamics of friction is required for systematic design of low friction surfaces for a broad range of technological applications. Intuitively, the thermodynamic work done by a material sliding along a surface is expected ... More
Dipolar polaritons squeezed at unitarityMay 15 2019Interaction of dipolar polaritons can be efficiently tuned by means of a shape resonance in their excitonic component. Provided the resonance width is large, a squeezed population of strongly interacting polaritons may persist on the repulsive side of ... More
Extending the Quantum Coherence of a Near-Surface Qubit by Coherently Driving the Paramagnetic Surface EnvironmentMay 15 2019Surfaces enable useful functionalities for quantum systems, e.g. as interfaces to sensing targets, but often result in surface-induced decoherence where unpaired electron spins are common culprits. Here we show that the coherence time of a near-surface ... More
Study on CePtIn4 grown in a platelet-like morphologyMay 15 2019We present the results of our comprehensive structural investigation performed on single crystals of CePtIn4 grown from In flux in a platelet-like morphology. They were found to crystalize in an orthorhombic structure having space group Cmcm (no. 63) ... More
Optical control of the current-voltage relation in stacked superconductorsMay 15 2019We simulate the current-voltage relation of short layered superconductors, which we model as stacks of capacitively coupled Josephson junctions. The system is driven by external laser fields, in order to optically control the voltage drop across the junction. ... More
Polyfractal driving for engineering Hamiltonians and symmetriesMay 15 2019We propose a new protocol for engineering quantum many-body Hamiltonians with enhanced symmetries. The protocol is based on repeated pulsed application of a set of unitary operators $X_i$, with $X_i^2 = 1$, (which can be generalized to $X^n=1$, $n > 2$) ... More
Fractal structure in Yang-Mills fields and non extensivityMay 15 2019Scaling properties of Yang-Mills fields are used to show that fractal structures are expected to be present in system described by those theories. We show that the fractal structure leads to recurrence formulas that allow the determination of non perturbative ... More
Topological surface states above the Fermi energy in $\textrm{Hf}_{2}\textrm{Te}_2\textrm{P}$May 15 2019We report a detailed experimental study of the band structure of the recently discovered topological material $\textrm{Hf}_{2}\textrm{Te}_2\textrm{P}$. Using the combination of scanning tunneling spectroscopy and angle-resolved photo-emission spectroscopy ... More
Tunable valley Hall effect in gate-defined graphene superlatticesMay 15 2019We theoretically investigate gate-defined graphene superlattices with broken inversion symmetry as a platform for realizing tunable valley dependent transport. Our analysis is motivated by recent experiments [C. Forsythe et al., Nat. Nanotechnol. 13, ... More
Roadmap on Material-Function Mapping for Photonic-Electronic Hybrid Neural NetworksMay 15 2019Driven by machine-learning tasks neural networks have demonstrated useful capabilities as nonlinear hypothesis classifiers. The underlying technologies performing the dot product multiplication, the summation, and the nonlinear thresholding on the input ... More
Strong Coupling Universality at Large N for Pure CFT Thermodynamics in 2+1 dimensionsMay 15 2019Pure CFTs have vanishing $\beta$-function at any value of the coupling. One example of a pure CFT is the O(N) Wess-Zumino model in 2+1 dimensions in the large N limit. This model can be analytically solved at finite temperature for any value of the coupling, ... More
Quantum chaos challenges many-body localizationMay 15 2019Characterizing states of matter through the lens of their ergodic properties is a fascinating new direction of research. In the quantum realm, the many-body localization (MBL) was proposed to be the paradigmatic nonergodic phenomenon, which extends the ... More
Pair spin-orbit interaction in low-dimensional electron systemsMay 15 2019The pair spin-orbit interaction (PSOI) is the spin-orbit component of the electron-electron interaction that originates from the Coulomb fields of the electrons. This relativistic component, which has been commonly assumed small in the low-energy approximation, ... More
The one-dimensionall Stefan problem with non-Fourier heat conductionMay 15 2019We investigate the one-dimensional growth of a solid into a liquid bath, starting from a small crystal, using the Guyer-Krumhansl and Maxwell-Cattaneo models of heat conduction. By breaking the solidification process into the relevant time regimes we ... More