3 papers
cond-mat.mes-hall2026
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…
cond-mat.mes-hall2025
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…
cond-mat.mes-hall2024
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,…