A finite Hatsugai-Kohmoto interaction opens a charge gap in the gapless edge states of Kane-Mele and spinful Haldane ribbons, with spin edge modes surviving in model-dependent ways.
Wang \ and\ author S.-C
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Fate of gapless edge states in two-dimensional topological insulators with Hatsugai-Kohmoto interaction
A finite Hatsugai-Kohmoto interaction opens a charge gap in the gapless edge states of Kane-Mele and spinful Haldane ribbons, with spin edge modes surviving in model-dependent ways.