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Duality and integer quantum Hall effect in isotropic 3D crystals
M. Koshino, H. Aoki
We show here a series of energy gaps as in Hofstadter's butterfly, which have been shown to exist by Koshino et al [Phys. Rev. Lett. 86, 1062 (2001)] for anisotropic three-dimensio…
Hybridization-induced superconductivity from the electron repulsion on a tetramer lattice having a disconnected Fermi surface
Takashi Kimura, Yuji Zenitani, Kazuhiko Kuroki +2
Plaquette lattices with each unit cell containing multiple atoms are good candidates for disconnected Fermi surfaces, which are shown by Kuroki and Arita to be favorable for spin-f…
Magnetic-field induced triplet superconductivity in the Hubbard model on a triangular lattice
Ryotaro Arita, Kazuhiko Kuroki, Hideo Aoki
We propose theoretically that a magnetic field can realize spin-triplet superconductivity in repulsively interacting electron systems having strong ferromagnetic spin fluctuations.…
Wrapping Current versus Bulk Integer Quantum Hall Effect in Three Dimensions
Mikito Koshino, Hideo Aoki, Bertrand I. Halperin
Surface electron currents are studied for the integer quantum Hall effect in three dimensions(3D) proposed previously by Kohmoto et al. and by Koshino et al. We predict the current…
Superconductivity induced by inter-band nesting in the three-dimensional honeycomb lattice
Seiichiro Onari, Kazuhiko Kuroki, Ryotaro Arita +1
In order to study whether the inter-band nesting can favor superconductivity arising from electron-electron repulsion in a three-dimensional system, we have looked at the repulsive…