3246 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.
Using temperature-dependent rotational anisotropy second harmonic generation, researchers identified a purely surface-driven charge density wave transition on CoSi (001) at 90 K that exhibits a critical exponent consistent with the 3D XY universality class, a result attributed to the coupling between surface Fermi-arc states and bulk topology.
This paper demonstrates the realization of a programmable Heisenberg spin ladder in a germanium quantum dot array, where tunable exchange interactions and Hamiltonian-learning protocols enable the quantitative mapping of magnetic quantum phase crossovers and the detection of higher-order spin correlations to establish the platform as a controllable system for studying quantum magnetism and unconventional superconductivity.
This paper analytically derives the steady-state properties, parity leakage, and decoherence rates of a Majorana tetron qubit under extrinsic quasiparticle poisoning, revealing how energy splitting gradually diminishes the exponential suppression of dephasing.
This paper introduces "tape-recorder coarse graining," an adaptive method that reorganizes environmental modes into active and outgoing sets with stochastic truncation, enabling efficient long-time simulations of interacting fermionic transport while providing rigorous, nonperturbative error bounds on the full device-reservoir state.
The paper proposes a novel micromechanical qubit design utilizing quantized oscillations in superfluid helium, which leverages charge-neutral Josephson tunneling to achieve discrete energy levels and millisecond-scale coherence times at millikelvin temperatures.
This study reveals that the electrical conductance of quasi-one-dimensional molecular wires assembled from metal superatoms can anomalously increase with length when structured as bundles, a phenomenon driven by Fermi level alignment that reduces the tunneling barrier and offers a new strategy for regulating molecular-scale circuitry.
This paper introduces a non-invasive nuclear spin-based spectroscopy technique for low-strain GaAs/AlGaAs epitaxial quantum dots, enabling the detailed characterization of few-electron energy spectra and many-body states to establish a new regime for optically active electron spin qubits with extended coherence.
This paper proposes two protocols utilizing local spin qubits, such as NV centers in diamond, to extend magnetic noise sensing beyond the Gaussian regime by enabling the spatially resolved measurement of higher-order noise cumulants and non-Markovian dynamics in quantum materials.
This paper proposes a novel method to accurately characterize valley coupling in Si/SiGe quantum dots by combining -factor measurements with valley phase information, specifically utilizing measurements around a valley vortex to overcome the statistical overestimation inherent in standard sampling approaches.
Motivated by recent experiments, this paper identifies a valley-coherent charge density wave (VC-CDW) as a universal stripe order in quarter-metal states of chirally stacked -layer graphene, demonstrating how its symmetry properties depend on layer parity and how it can coexist with anomalous Hall order to lift valley degeneracy under displacement fields.