3 papers
cond-mat.mtrl-sci2025
Multipole analysis of spin currents in altermagnetic MnTe
Ryosuke Hirakida, Karma Tenzin, Chao Chen Ye +3
Altermagnets, a class of unconventional antiferromagnets where antiparallel spins are connected by combined rotational and translational symmetries, have recently emerged as promis…
cond-mat.mes-hall2025
Symmetry requirements for current-induced spin magnetization specific to chiral crystals: Multipole analysis and the hidden spin glide symmetry
Ryosuke Hirakida, Masaki Kato, Masao Ogata
Current-induced spin magnetization (CISM) specific to chiral crystals is microscopically analyzed using multipole theory to identify the necessary hopping and spin-orbit couplings…
cond-mat.mes-hall2024
Chirality-dependent second-order spin current in systems with time-reversal symmetry
Ryosuke Hirakida, Junji Fujimoto, Masao Ogata
Spin currents proportional to the first- and second-order of the electric field are calculated in a specific tight-binding model with time-reversal symmetry. Specifically, a tight-…