
Solving a Stochastic Differential Equation is Solving a MeanField Quantum Spin System
2024516
The replica method maps matrixvalued geometric Brownian motion to a meanfield quantum spin system. This correspondence makes it possible to obtain an exact solution for matrixvalued geometric Brownian motion.
Statistical physics and thermodynamics
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling
Magnetic properties in condensed matter

Cooking in Salt for UltraClean Superconductor UTe_{2}
2024430
A new crystal growth technique, the molten salt flux liquid transport method, was developed to produce highquality single crystals of spintriplet superconductor UTe_{2}. This method is promising for exploring the exotic superconductivity of other materials.
Superconductivity

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Exploring Electronic States in BEDTTTF Organic Superconductors
2024424
This review, published in the Journal of the Physical Society of Japan, provides a comprehensive summary of the electronic states observed in BEDTTTF type organic superconductors, including metalinsulator transitions, Mottness transitions, nonFermi liquids, quantum spin liquids, and BoseEinstein condensation.
Superconductivity
Electronic transport in condensed matter
Magnetic properties in condensed matter

Conversion of Chiral Phonons into Magnons in Magnets
202441
A new phenomenon involving the conversion of chiral phonons into magnons is theoretically predicted. The effective magnetic field induced by chiral phonons causes a change in the spin magnetization of magnets.
Electronic transport in condensed matter

Which is Moving?—Pinning Down the Origin of Fluctuations in Muon Spin Relaxation—
2024328
The study demonstrated that we can distinguish between the diffusion motion of the muon itself and the motion of the surrounding ions in muon spin relaxation.
Structure and mechanical and thermal properties in condensed matter
Crossdisciplinary physics and related areas of science and technology

Variety of Mechanically Induced Spin Currents in Rashba Systems
2024322
Various types of spin currents, including unconventional types, are generated in Rashba spinorbit coupled systems by dynamic lattice distortions associated with, for example, surface acoustic waves.
Electronic transport in condensed matter
Magnetic properties in condensed matter
Structure and mechanical and thermal properties in condensed matter

What Determines the Sign of Spin Current? ~ Theoretical Study of Spin Seebeck Effect in Antiferromagnetic Insulators
2024318
We developed a microscopic theory for the spin Seebeck effect in antiferromagnets, that explains the sign reversal of the spin current at the spinflop transition point and describes the sorts of dominant carriers.
Electronic transport in condensed matter

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Quantum Mechanics of OneDimensional ThreeBody Contact Interactions
2024213
The quantum mechanical description of topologically nontrivial threebody contact interactions in one dimension is not well understood. This study explores the Hamiltonian description of these interactions using the pathintegral formalism.
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling
Theoretical Particle Physics

Chiral Anomalies in Organic Dirac Semimetals
202425
A threedimensional massless Dirac fermion system exhibiting broken chiral symmetry was successfully realized in organic conductor α(BEDTTTF)_{2}I_{3} under high pressures. Our study detected the chiral anomalyinduced negative magnetoresistance and planar Hall effects and opened new avenues for further advancements in the field.
Electronic transport in condensed matter

Relation between MeanField Theory and Atomic Structures in Chalcogenide Glasses
202421
The authors conducted various of Xray and neutron scattering experiments on typical chalcogenide glasses and clarified the relationship between the atomic structure and simple rigidity percolation theory.
Structure and mechanical and thermal properties in condensed matter