-
Evaluation of the Exchange Stiffness Constants of Itinerant Magnets from the First-Principles Calculations
2024-6-5
Using first-principles calculations, we evaluated the exchange stiffness constants of ferromagnetic metals at finite temperatures. The constants can be used as parameters in the Landau–Lifshitz–Gilbert equation.
Electron states in condensed matter
Structure and mechanical and thermal properties in condensed matter
-
Microscopic Exploration of Electronic States in Nickelate Superconductors
2024-5-31
The multilayered nickelates, La3Ni2O7 and La4Ni3O10 , were investigated using nuclear magnetic resonance (NMR) at ambient pressure. Metallic electronic states under the density wave order were observed microscopically for both compounds.
Magnetic properties in condensed matter
Superconductivity
-
Single-Crystal Growth of a Cuprate Superconductor with the Highest Critical Temperature
2024-5-20
Millimeter-sized single crystals of a trilayer cuprate superconductor (Hg,Re)Ba2Ca2Cu3O8+δ that exhibits the highest superconducting transition temperature under ambient pressure, were grown reproducibly and safely.
Superconductivity
-
Solving a Stochastic Differential Equation is Solving a Mean-Field Quantum Spin System
2024-5-16
The replica method maps matrix-valued geometric Brownian motion to a mean-field quantum spin system. This correspondence makes it possible to obtain an exact solution for matrix-valued 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 Ultra-Clean Superconductor UTe2
2024-4-30
A new crystal growth technique, the molten salt flux liquid transport method, was developed to produce high-quality single crystals of spin-triplet superconductor UTe2. This method is promising for exploring the exotic superconductivity of other materials.
Superconductivity
-
PICKUP
Exploring Electronic States in BEDT-TTF Organic Superconductors
2024-4-24
This review, published in the Journal of the Physical Society of Japan, provides a comprehensive summary of the electronic states observed in BEDT-TTF type organic superconductors, including metal-insulator transitions, Mottness transitions, non-Fermi liquids, quantum spin liquids, and Bose-Einstein condensation.
Superconductivity
Electronic transport in condensed matter
Magnetic properties in condensed matter
-
Conversion of Chiral Phonons into Magnons in Magnets
2024-4-1
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—
2024-3-28
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
Cross-disciplinary physics and related areas of science and technology
-
Variety of Mechanically Induced Spin Currents in Rashba Systems
2024-3-22
Various types of spin currents, including unconventional types, are generated in Rashba spin-orbit 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
2024-3-18
We developed a microscopic theory for the spin Seebeck effect in antiferromagnets, that explains the sign reversal of the spin current at the spin-flop transition point and describes the sorts of dominant carriers.
Electronic transport in condensed matter