69 citations · 121 across the 4 of their papers we have counts for
4 papers
Low temperature properties in the Bilayer Kitaev model
Hiroyuki Tomishige, Joji Nasu, Akihisa Koga
The ground state of the bilayer Kitaev model with the Heisenberg-type interlayer exchange interaction is investigated by means of the exact diagonalization. Calculating the ground-…
Ground-state properties for bilayer Kitaev model: dimer expansion study
Akihisa Koga, Hiroyuki Tomishige, Joji Nasu
We study ground state properties in the bilayer Kitaev model by means of the dimer expansion. The existence of parity symmetries in the system reduces the computational cost signif…
Ground-state and thermodynamic properties of an Kitaev model
Akihisa Koga, Hiroyuki Tomishige, Joji Nasu
We study ground-state and thermodynamic properties of an Kitaev model. We first clarify the existence of global parity symmetry in addition to the local symmetry on each plaq…
Interlayer Coupling Effect on a Bilayer Kitaev Model
Hiroyuki Tomishige, Joji Nasu, Akihisa Koga
We investigate a bilayer Kitaev model, where two honeycomb layers are coupled by the Heisenberg interactions, to discuss effects of an interlayer coupling against the Kitaev quantu…