Cross-disciplinary physics and related areas of science and technology

Dielectric, optical, and other properties in condensed matter

Electromagnetism, optics, acoustics, heat transfer, and classical and fluid mechanics

Electronic structure and electrical properties of surfaces and nanostructures

Structure and mechanical and thermal properties in condensed matter

The special topics edition of the Journal of the Physical Society of Japan presents five new review articles offering cutting-edge information on the emerging field of topological photonics.

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

Magnetic properties in condensed matter

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

A simple example of a higher-order topological phase, in which the symmetry decreases step-by-step from the bulk to the corner, is realized in a magnetic system with a pyrochlore structure and is characterized by a series of quantized Berry phases defined for the bulk, surface, and edge.

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.