3 papers
cond-mat.str-el2026
Spherical-tensor description of the Jahn--Teller--Hubbard molecule and local electron--phonon entanglement
Koichiro Takahashi, Shuichiro Ebata, Naotaka Yoshinaga +1
We investigate the localized-electron character of the Mott-insulating phase in AC using a single-site multiorbital electron model coupled to anisotropic molecular vibra…
cond-mat.mtrl-sci2025
Symmetry and Minimal Hamiltonian of Nonsymmorphic Collinear Antiferromagnet MnTe
Koichiro Takahashi, Hong-Fei Huang, Jie-Xiang Yu +1
-MnTe, an -type collinear antiferromagnet, has recently attracted significant attention due to its pronounced spin splitting despite having net zero magnetization, a phenome…
cond-mat.other2024
Inertia in skyrmions confined to one-dimensional geometries
Koichiro Takahashi, Sergey S. Pershoguba, Jiadong Zang
Magnetic skyrmions are conventionally attributed to having zero mass. In contrast, we show that skyrmions confined to one-dimensional geometries generically acquire mass (inertia)…