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.
This paper presents a theoretical framework based on Brown's micromagnetics equations for computing the uniaxial polarization of scattered neutron beams from bulk ferromagnets, which is validated against experimental data from a soft magnetic nanocrystalline alloy to establish a new approach for analyzing magnetic microstructures.
This paper presents an analytical treatment of the magnetization profile and magnetic small-angle neutron scattering cross section for a spherical nanoparticle with Néel surface anisotropy, deriving an approximate solution via perturbation theory and validating it against numerical Landau-Lifshitz simulations.
This study employs atomistic simulations based on the Landau-Lifshitz equation to investigate the magnetization structure and magnetic small-angle neutron scattering response of noninteracting spherical nanoparticles, specifically analyzing the impact of Néel surface anisotropy and particle-size distributions while comparing numerical results with analytical models to guide experimental interpretation.
This paper utilizes micromagnetic simulations to investigate how pore-type defects and dipolar interactions influence the magnetic small-angle neutron scattering signatures and pair-distance distribution functions of spherical nanoparticles, providing experimentalists with valuable guidelines for interpreting their data.
Motivated by recent experimental results, this numerical micromagnetic study demonstrates that interfacial Dzyaloshinskii-Moriya interactions in nanocrystalline terbium induce spin misalignment between adjacent grains, causing the asymmetric scattering patterns observed in polarized neutron experiments and highlighting the DMI's generic impact on the macroscopic magnetic properties of defect-rich polycrystalline materials.
This paper reports the discovery of a universal scaling law in the mesoscale magnetic microstructure of bulk ferromagnets, introducing a field-dependent scaling length that successfully collapses experimental neutron scattering data from different materials onto a single master curve.
This paper experimentally demonstrates a previously unseen spin-disorder-induced angular anisotropy in the polarized small-angle neutron scattering cross section of magnetically inhomogeneous materials, providing a novel method for determining the exchange-stiffness constant based on micromagnetic theory.
By utilizing substrate work function control and tip-induced gating to shift the energy of the ionic transition state, researchers successfully induced bright exciton emission from a single free-base tetrabenzoporphyrin molecule that was previously dark in scanning tunneling microscopy-induced luminescence.
This paper demonstrates that electrically coupling perpendicular magnetic tunnel junctions in parallel induces correlated stochastic switching through circuit-mediated voltage redistribution, a phenomenon that can be accurately modeled using Kirchhoff's laws and mapped onto an Ising Hamiltonian to reveal tunable effective spin-spin interactions.
This paper proposes a method to directly measure the elusive orbital magnetic moment of scalar spin chirality by using local drives to break cyclic symmetry and activate chirality-changing transitions, with predicted experimental signatures in systems like scanning tunneling microscopes and quantum-dot qubits.