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Cyclotron radiation and emission in graphene
Takahiro Morimoto, Yasuhiro Hatsugai, Hideo Aoki
Peculiarity in the cyclotron radiation and emission in graphene is theoretically examined in terms of the optical conductivity and relaxation rates to propose that graphene in magn…
Phase diagram for the one-dimensional Hubbard-Holstein model: A density-matrix renormalization group study
Masaki Tezuka, Ryotaro Arita, Hideo Aoki
Phase diagram of the Hubbard-Holstein model in the coexistence of electron-electron and electron-phonon interactions has been theoretically obtained with the density-matrix renorma…
Itinerant ferromagnetism in the multiorbital Hubbard model: a dynamical mean-field study
Shiro Sakai, Ryotaro Arita, Hideo Aoki
In order to resolve the long-standing issue of how the itinerant ferromagnetism is affected by the lattice structure and Hund's coupling, we have compared various three-dimensional…
Topological aspects of graphene: Dirac fermions and the bulk-edge correspondence in magnetic fields
Y. Hatsugai, T. Fukui, H. Aoki
We discuss topological aspects of electronic properties of graphene, including edge effects, with the tight-binding model on a honeycomb lattice and its extensions to show the foll…