Kazushi Aoyama

activity

20242026

collaborators

7 papers

cond-mat.str-el2026

Magnetic field effects on spin-split band and magnon transport in altermagnets and emergent compensated ferrimagnets

Kazushi Aoyama, Hikaru Kawamura

In altermagnets and fully compensated ferrimagnets, not only the electron band but also the magnon band exhibits spin splitting without net magnetization, which enables thermal act…

cond-mat.stat-mech2026

Spatiotemporal Structures of Parametrically Driven Nonlinear Lattices

Yu Funami, Kazushi Aoyama

We theoretically investigate the effects of parametric driving on the one-dimensional Frenkel-Kontorova model, a nonlinear many-body lattice system. It is numerically found that a…

cond-mat.mtrl-sci2026

The second altermagnet candidate in organic conductors: $I^º$ -(BEDT-TTF) $_{2}$ $m$ -HOOCC $_{6}$ H $_{4}$ SO $_{3}$

Kohei Tokura, Takato Masuta, Kazushi Aoyama +3

We have developed a novel BEDT-TTF-based organic conductor, $I^º$ -(BEDT-TTF) $_{2} m$ -HOOCC $_{6}$ H $_{4}$ SO $_{3}$ ( $I^º$ - $m$ -SBA), and propose it as a candidate for altermagnet. Tight-binding…

cond-mat.str-el2026

Triple- $Q$ collinear state with compensated ferrimagnetic nature on frustrated kagome lattice

Kazushi Aoyama, Hikaru Kawamura

Spin-selective band splitting without net magnetization and spin-orbit couplings serves for a next-generation spin-current generator, and its typical platforms are altermagnets and…

cond-mat.supr-con2025

Observation of the crossover from quantum fluxoid to half-quantum fluxoid in a chiral superconducting device

Masashi Tokuda, Fumiya Matsumoto, Noriaki Maeda +16

Topological superconductors are one of the intriguing material groups from the viewpoint of not only condensed matter physics but also industrial application such as quantum comput…

cond-mat.str-el2025

RKKY interaction in the presence of a charge-density-wave order