From the 1 of 4 linked papers with an AI index.
4 papers
Halogen control of magnetic competition in Kitaev candidate Ru ( Cl, Br)
Ryuta Iwazaki, Shinnosuke Koyama, Takashi Koretsune +2
The authors derive effective pseudospin models from first‑principles Hubbard calculations for RuCl₃ and RuBr₃, showing that halogen substitution changes interlayer exchange and orb…
Flexocurrent-induced magnetization: Strain gradient-induced magnetization in time-reversal symmetric systems
Shinnosuke Koyama, Takashi Koretsune, Kazumasa Hattori
Symmetry constraints determine which physical responses are allowed in a given system. Magnetization induced by strain fields, such as in piezomagnetic and flexomagnetic effects, h…
Formulation of spin Nernst effect for spin-nonconserving insulating magnets
Shinnosuke Koyama, Joji Nasu
The spin Nernst effect, an antisymmetric response of a spin current to a temperature gradient, has attracted attention as spin transport phenomenon arising from the topologically n…
Impact of triplon damping on thermal Hall conductivity in Shastry-Sutherland model
Shinnosuke Koyama, Joji Nasu
We investigate the thermal Hall effect in the Shastry-Sutherland model, incorporating interactions between quasiparticle excitations. In this model, with strong nearest-neighbor in…