Dielectric, optical, and other properties in condensed matter

Superconductivity

This work provides the first observation of the superconducting gap in molecular superconductors and their gap symmetry using photoemission spectroscopy, which will significantly accelerate the study of molecular conductors.

Superconductivity

We theoretically demonstrate the emergence of finite-momentum superconductivity in a two-dimensional altermagnet with Rashba-type spin–orbit coupling (RSOC), where anisotropic deformations of the Fermi surfaces stabilize this unconventional superconducting state.

Electronic structure and electrical properties of surfaces and nanostructures

Superconductivity

The superconducting diode effect is proposed for a three-terminal semiconductor double-quantum-dot device. This effect is considerably enhanced by the Dirac-point singularities in the superconducting phase space.

Superconductivity

Analysis of the two-component Ginzburg-Landau theory suggests that a conventional vortex is transformed into two fractional vortices with the topological nature of core-down and core-up merons at the twin boundary of a nematic superconductor.

Cross-disciplinary physics and related areas of science and technology

Electron states in condensed matter

Elementary particles, fields, and strings

Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling

Statistical physics and thermodynamics

Superconductivity

This Journal of the Physical Society of Japan Special Topics edition explores how physics and machine learning complement each other and can solve unresolved problems in physics.