1 citations · 1 across the 3 of their papers we have counts for
4 papers
Wilson-loop formulations of the spin polarization and the spin Chern number
Kiminori Hattori, Ryuki Uchida
In this paper, we derive the spin polarization and the spin Chern number in momentum and real spaces in terms of the Wilson loop in each spin sector. For these derivations, the spi…
Real-space formulation of the Chern invariant and topological phases in a disordered Chern insulator
Kiminori Hattori, Shinji Nakata
In this paper, we formulate the real-space Chern number in a supercell framework. In this framework, the overlap matrix between two corners of the Brillouin zone (BZ) is derived fr…
Topological phase transition in nonchiral Rice-Mele model with bond disorder
Kiminori Hattori, Kenyu Chikamori, Hayato Iizuka +1
The Rice-Mele model consists of a one-dimensional lattice with two sublattice sites in each unit cell subjected to a staggered sublattice potential. The onsite potential constitute…
Real-space formulation of topology for disordered Rice-Mele chains without chiral symmetry
Kiminori Hattori, Ata Yamaguchi
In this paper, we derive a real-space topological invariant that involves all energy states in the system. This global invariant, denoted by , is always quantized to be 0 or 1,…