156 citations · 971 across the 45 of their papers we have counts for
4 papers · 1 filter
Edge states of mechanical diamond and its topological origin
Yuta Takahashi, Toshikaze Kariyado, Yasuhiro Hatsugai
A mechanical diamond, a classical mechanics of a spring-mass model arrayed on a diamond lattice, is discussed topologically. Its frequency dispersion possesses an intrinsic nodal s…
Mirror winding number and helical edge modes in honeycomb lattice with hopping-energy texture
Toshikaze Kariyado, Xiao Hu
We illustrate possible topological phases in honeycomb lattice with textures in electron hopping energy between nearest-neighboring sites and show that they are characterized by th…
Section Chern number for a 3D photonic crystal and the bulk-edge correspondence
Shuhei Oono, Toshikaze Kariyado, Yasuhiro Hatsugai
We have characterized the robust propagation modes of electromagnetic waves in helical structures by the section Chern number that is defined for a two-dimensional (2D) section of…
Entanglement Chern Number of the Kane-Mele Model with Ferromagnetism
Hiromu Araki, Toshikaze Kariyado, Takahiro Fukui +1
The entanglement Chern number, the Chern number for the entanglement Hamiltonian, is used to charac- terize the Kane-Mele model, which is a typical model of the quantum spin Hall p…