Observation of Gapped Dirac Cones in a Two-Dimensional Su-Schrieffer-Heeger Lattice

Daiyu Geng, Hui Zhou, Shaosheng Yue +6

The Su-Schrieffer-Heeger (SSH) model in a two-dimensional rectangular lattice features gapless or gapped Dirac cones with topological edge states along specific peripheries. While…