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…
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…
Magnetic-field effect on excitonic condensation emergent in extended Falicov-Kimball model
Naoya Ohta, Joji Nasu
We investigate the effects of magnetic fields on excitonic condensation in the extended Falicov-Kimball model, which is a spinless two-orbital Hubbard model with orbital splitting.…
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…