36 citations · 105 across the 5 of their papers we have counts for
6 papers
Temperature evolution of spin dynamics in two- and three-dimensional Kitaev models: Influence of fluctuating gauge fluxes
Junki Yoshitake, Joji Nasu, Yukitoshi Motome
The long-sought quantum spin liquid is a quantum-entangled magnetic state leading to the fractionalization of spin degrees of freedom. Quasiparticles emergent from the fractionaliz…
Incarnation of Majorana Fermions in Kitaev Quantum Spin Lattice
Seung-Hwan Do, Sang-Youn Park, Junki Yoshitake +10
Kitaev quantum spin liquid is a topological magnetic quantum state characterized by Majorana fermions of fractionalized spin excitations, which are identical to their own antiparti…
Fermionic response from fractionalization in an insulating two-dimensional magnet
J. Nasu, J. Knolle, D. L. Kovrizhin +2
Conventionally ordered magnets possess bosonic elementary excitations, called magnons. By contrast, no magnetic insulators in more than one dimension are known whose excitations ar…
Phase Diagram of the Kitaev-type Model on a Decorated Honeycomb Lattice in the Isolated Dimer Limit
Joji Nasu, Yukitoshi Motome
An effective model in the isolated dimer limit of the Kitaev-type model on a decorated honeycomb lattice is investigated at finite temperature. The ground state of this model is ex…
Polar Charge Fluctuation and Superconductivity in Organic Conductor
Akihiko Sekine, Joji Nasu, Sumio Ishihara
Superconductivity and polar charge fluctuation are studied in an organic conductor with the dimer-molecule degree of freedom. The extended Hubbard models, where the intra-dimer ele…
Doubly degenerate orbital system in honeycomb lattice: implication of orbital state in layered iron oxide
J. Nasu, A. Nagano, M. Naka +1
We study a doubly-degenerate orbital model on a honeycomb attice. This is a model for orbital states in multiferroic layered iron oxides. The classical and quantum models are analy…