14 citations · 23 across the 6 of their papers we have counts for
6 papers
Halogen control of magnetic competition in Kitaev candidate Ru ( Cl, Br)
Ryuta Iwazaki, Shinnosuke Koyama, Takashi Koretsune +2
The spin-orbital Mott insulators Ru ( Cl, Br) have attracted considerable attention as promising candidate materials for realizing a Kitaev spin liquid. In this study, we…
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…
A review on magnetic field induced spin crossover in LaCoO up to 600 T
Akihiko Ikeda, Yasuhiro H. Matsuda, Keisuke Sato +1
\lco{} is known for its two-step spin crossover as a function of temperature. Despite efforts spanning over half a century, the origin of this phenomenon is still debated, particul…
Thermal Hall effect incorporating magnon damping in localized spin systems
Shinnosuke Koyama, Joji Nasu
We propose a theory for thermal Hall transport mediated by magnons to address the impact of their damping resulting from magnon-magnon interactions in insulating magnets. This phen…