323 papers
This paper proposes a mechanism for electrical uni-directional molecular motors driven by electron current through helical orbitals, introduces a formal definition of helicality to link electronic angular momentum with rotational direction, and predicts that approximate sub-lattice symmetry causes the motor's sense of rotation to remain independent of the current direction.
This paper demonstrates that optimizing the composition and layer thickness of spintronic terahertz emitters using a PtAu alloy significantly enhances THz output power by up to 30% compared to conventional Pt-based devices, establishing it as a high-performance platform driven by a giant spin Hall effect.
This paper reformulates the Chern character in topological K-theory using Fermi points of Fredholm operators to generalize spectral flow and provide elementary proofs for the evenness of the edge index and the bulk-edge correspondence in four-dimensional time-reversal symmetric topological insulators (class AI).
This study characterizes the magnetic properties of an individual *Magnetospirillum gryphiswaldense* bacterium by combining ultrasensitive torque magnetometry, transmission electron microscopy, and micromagnetic simulations to reveal the magnetic configurations, remanent moment, and effective anisotropy of its internal magnetosome chain.
This paper demonstrates that ultra-shallow Ge/SiGe heterostructures with thin SiGe capping layers, fabricated using low-temperature oxide processes to preserve superconducting compatibility, achieve low charge-noise levels comparable to deeper structures, making them a promising platform for prototyping hybrid semiconducting-superconducting devices.
This review comprehensively introduces the geometrical formalism of strained moiré superlattices derived from linear elasticity theory, explores their application in various twisted 2D materials to predict special patterns, and summarizes recent experimental techniques for realizing and engineering these strain-induced geometries.
This paper develops a Fokker-Planck framework based on the Landau-Lifshitz-Gilbert equation with Langevin fields to model the thermal fluctuations and spin-wave dynamics of two-dimensional antiferromagnetic systems with uniaxial anisotropy, ultimately applying the theory to describe resistance fluctuations in antiferromagnetic semiconductors.
This paper theoretically proposes a method for cooling electrons by utilizing superconducting tunnel junctions with phase differences and ferroelectric layers, which feature nodal lines that create a divergent density of states and high entropy to facilitate heat removal from an electron bath.
Using the numerical renormalization group method, this study demonstrates that correlated hopping induces asymmetric spin-dependent transport and significantly alters the thermoelectric efficiency of a quantum dot coupled to ferromagnetic leads by modifying Kondo resonance and conductance peak asymmetry.
This paper extends the concept of altermagnetism to quasicrystals by using a hyperspatial projection framework to demonstrate that interaction-induced Néel order on decorated Ammann-Beenker and Penrose lattices gives rise to unconventional -wave and -wave altermagnetic phases with momentum-dependent spin splitting compatible with noncrystallographic rotational symmetries.
This paper derives an expression for local Hall conductivity in disordered systems to demonstrate that non-magnetic disorder and the fragmentation of disordered patches can expand the parameter regimes for both Chern insulating states and topological Anderson insulators, thereby motivating new local experimental techniques to visualize these effects.
This paper demonstrates that coupling chiral fermions to local, dispersionless phonons induces a topological splitting of the phonon spectrum into flat and linearly dispersing bands with hedgehog-like Berry curvature, revealing a phonon parity anomaly that enables phonon currents to directly probe electronic chirality and topological structures.
This paper investigates the interplay between Kondo correlations, Zeeman splitting, and Cooper-pair effects in nonlocal Andreev transport through a quantum dot coupled to normal and superconducting leads, demonstrating that crossed Andreev reflection is enhanced in the crossover region between Kondo and superconducting regimes and remains robust against magnetic fields within a specific Bogoliubov-rotation angle range.
This study utilizes density functional theory with various exchange-correlation functionals to investigate the thermal and mechanical properties of alkali halides and hydrides, revealing that the choice of functional significantly influences predictions of lattice thermal conductivity and the conditions for observing phonon hydrodynamics, while also identifying new materials exhibiting this phenomenon.
This paper proposes metal-organic frameworks (MOFs) as a versatile, designable platform for realizing the nonlinear Hall effect by mapping their electronic structures to a universal low-energy model where symmetry-breaking mechanisms generate Berry-curvature hotspots near the Fermi level.
This paper proposes and numerically verifies a lattice formulation of the -valued Arf-Brown-Kervaire invariant for Majorana fermions on two-dimensional non-oriented manifolds, demonstrating that it can be extracted from Pfaffians of the Wilson Dirac operator and agrees with continuum theory results.
This study introduces ultralight, three-dimensional "bird's-nest" scaffolds made from FeCoNiCrCu high-entropy alloy nanowires that achieve metal-like thermal and magnetic functionality at less than 1% of bulk density by co-engineering configurational entropy with structural porosity.
This paper provides experimental evidence for intrinsic, spin-polarized superconductivity in mesoscopic Fe(Te,Se) rings, characterized by a current-dependent magnetic field and dual flux quantization that is explained by a model combining Rashba coupling with anisotropic out-of-plane interactions.
This paper presents a semiclassical spin dynamics framework for computing thermal Hall conductivity via linear response theory, demonstrating its effectiveness in capturing non-linear magnon interaction effects in chiral ferromagnets and Kitaev magnets beyond simple non-interacting approximations.
This paper proposes a higher-harmonic acoustic driving scheme that enables high-fidelity control of quantum-dot optical transitions at accessible acoustic frequencies (e.g., 42 GHz) despite large energy splittings (0.341 THz), thereby overcoming previous sub-THz limitations and paving the way for advanced on-chip quantum technologies involving multi-phonon processes and entanglement.