271 citations · 1.2k across the 38 of their papers we have counts for
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Meissner effect in the layered Kane-Mele model with Hubbard interaction
Jun Goryo, Nobuki Maeda
We investigate the magnetic response in the quantum spin Hall phase of the layered Kane-Mele model with Hubbard interaction, and argue a condition to obtain the Meissner effect. Th…
Valley Spin Sum Rule for Dirac Fermions: Topological Argument
Jun Goryo
We consider a two-dimensional bipartite lattice system. In such a system, the Bloch band spectrum can have some valley points, around which Dirac fermions appear as the low-energy…
(De)confinement of supercurrent in Z_2 Topological Insulators
Jun Goryo, Nobuki Maeda, Ken-Ichiro Imura
It is shown that the electric supercurrent flows in a Z_2 topological insulator with U_em(1) X U_z(1) (electromagnetic and spin) gauge symmetries. When U_z(1) is broken, a dissipat…
Intrinsic Spin Hall Effect in s-wave Superconducting State: Analysis of Rashba Model
H. Kontani, J. Goryo, D. S. Hirashima
A general expression for the spin Hall conductivity (SHC) in the s-wave superconducting state at finite temperatures is derived. Based on the expression, we study the SHC in a two-…
Transient Oscillation of Currents in Quantum Hall Effect of Bloch Electrons
Manabu Machida, Jun Goryo, Naomichi Hatano
We consider the quantum Hall effect of two-dimensional electrons with a periodic potential and study the time dependence of the Hall and longitudinal currents when the electric fie…
Adiabatic Process and Chern Numbers
Jun Goryo, Mahito Kohmoto
We study quantum processes with two or more adiabatic parameters. When the parameters are compactified, a derivative of the Hamiltonian gives a first Chern number, hence an integer…