2439 papers
Explore the fascinating intersection where quantum materials meet the complexity of everyday environments in the Cond-Mat — Mes-Hall section. This field investigates how tiny particles behave when caught between the orderly world of single atoms and the chaotic nature of bulk matter, revealing the hidden rules that govern electricity, magnetism, and heat in novel substances.
Gist.Science brings these cutting-edge discoveries to you directly from arXiv, the leading repository for physics preprints. We process every new submission in this category as soon as it appears, offering both straightforward, plain-language explanations and deep technical summaries to help researchers and curious minds alike grasp the latest breakthroughs without getting lost in dense equations.
Below are the most recent papers in this dynamic area of condensed matter physics, ready for you to explore.
This paper demonstrates that a first-order knot transition in the complex eigenvalue spectrum of a non-Hermitian Hamiltonian can emerge from a topological phase transition in an underlying Hermitian model defined by the non-Hermitian system's singular values, a process characterized by discrete jumps in eigenvalues rather than exceptional points.
This review examines how recent advances in materials science, device characterization, and nanofabrication are overcoming critical challenges in Josephson junction reproducibility, dissipation, and scalability to enable the transition from laboratory components to industrial-scale superconducting quantum processors.
This study employs multi-band k·p theory to reveal that while tetrahedral InP/ZnSe quantum dots largely retain spherical-like excitonic spectra, their specific size-dependent optical transitions, valence band coupling involving split-off holes, and the binding energies of trions and biexcitons are uniquely governed by symmetry relaxation and strong carrier confinement within the core.
This paper resolves the intrinsic gauge ambiguities of the Berry connection in non-Hermitian systems by introducing a covariant formalism based on the Hilbert space metric tensor, which yields a uniquely defined, Hermitian connection that consistently recovers standard geometric phases and topological invariants while eliminating the complexities of the conventional biorthogonal approach.
This study numerically demonstrates that linear thermal noise in a four-terminal system with a finite Berry curvature dipole exhibits distinct scaling behaviors and peak features dependent on the field orientation, thereby establishing a direct correspondence between terminal-resolved quantum noise and direction-resolved semiclassical bulk transport.
This paper predicts that thermoelectric and current rectification effects in hybrid junctions of Ising superconductors and valley-polarized van der Waals materials can serve as experimentally accessible probes for detecting spin- and valley-polarized states.
This paper introduces the polaron-transformed canonically consistent quantum master equation (PT-CCQME), a unified theoretical framework that extends the accuracy of open quantum system simulations to strong system-bath interaction regimes while maintaining low numerical complexity, as validated by excellent agreement with exact TEMPO simulations on the spin-boson model.
This paper proposes a boundary potential method based on scattering theory to calculate the conductance of an interferometer containing a topological superconductor, enabling the description of electron teleportation through Majorana zero modes under constraints on the electron number caused by charging effects.
This paper investigates the time- and momentum-resolved dynamics of matter waves in disordered potentials under uniform SU(2) gauge fields by deriving a disorder-averaged density matrix that accurately describes short-time spin-momentum relaxation and coherent backscattering phenomena across various disorder and gauge field strengths.
This paper presents a robust machine learning methodology that extracts the spin-spiral wave vector of two-dimensional noncollinear magnetic states directly from lateral electronic transport measurements by analyzing the conductance's dependence on magnetic field and bias.