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cond-mat.mes-hall2019★ 29 cited
Higher-order topological insulators in a magnetic field
Y. Otaki, T. Fukui
Two-dimensional (2D) generalization of the Su-Schriffer-Heeger (SSH) model serves as a platform for exploring higher-order topological insulators (HOTI). We investigate this model…
cond-mat.mes-hall2019★ 28 cited
Edge states, corner states, and flat bands in a two-dimensional symmetric system
A. Yoshida, Y. Otaki, R. Otaki +1
We study corner states on a flat band in the square lattice. To this end, we introduce a two dimensional model including Su-Schrieffer-Heeger type bond alternation responsible for…