2 papers
cond-mat.mes-hall2021
Diophantine equation for the Rice-Mele model: Topological aspect of filling numbers and associated spatial pump
K. Asaga, T. Fukui
We introduce a long-period generic spatial modulation into a typical model of the Thouless pump, namely, the Rice--Mele (RM) model, to examine the lattice analog of the fermion cha…
cond-mat.mes-hall2020
Boundary-obstructed topological phases of a massive Dirac fermion in a magnetic field
K. Asaga, T. Fukui
It is known that in some higher-order topological insulators (HOTIs), topological phases are distinguished not by gap closings of bulk states but by those of edge states, which are…