Edge states, corner states, and flat bands in a two-dimensional PT -symmetric system
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DOI: 10.1103/physrevb.100.125125
Abstract: 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 corner states as well as next-nearest-neighbor hoppings yielding… read more here.
Keywords: edge states; states flat; system; corner states ... See more keywords