2 papers
cond-mat.mes-hall2026
Spin-1 Dirac dispersion and Chern insulating phases in 2D honeycomb Sierpiński fractal
Shneha Biswas, Shouya Yoshida, Katsunori Wakabayashi +1
Graphene-based Sierpiński fractals host a zero-energy chiral mode and spin-1 Dirac dispersions within the nearest-neighbor tight-binding model. However, the presence of complex nex…
cond-mat.str-el2024
Identifying the phases of Kane-Mele Hubbard Hamiltonian in momentum space: A many-body configuration interaction study
Ranadeep Roy, Sasmita Mohakud, Katsunori Wakabayashi +1
We investigate the magnetic and conduction properties of Kane-Mele Hubbard model in quasi one-dimensional honeycomb ribbon systems at half-filling by varying the strength of both s…