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- W4220865317 abstract "We study the topological properties of the generalized two-dimensional (2D) Su-Schrieffer-Heeger (SSH) models. We show that a pair of Dirac points appear in the Brillouin zone (BZ), consisting a semimetallic phase. Interestingly, the locations of these Dirac points are not pinned to any high-symmetry points of the BZ but tunable by model parameters. Moreover, the merging of two Dirac points undergoes a novel topological phase transition, which leads to either a weak topological insulator or a nodal-line metallic phase. We demonstrate these properties by constructing two specific models, which we referred as type-I and type-II 2D SSH models. The feasible experimental platforms to realize our models are also discussed." @default.
- W4220865317 created "2022-04-03" @default.
- W4220865317 creator A5071369159 @default.
- W4220865317 date "2022-03-16" @default.
- W4220865317 modified "2023-10-12" @default.
- W4220865317 title "Topological States in Two-Dimensional Su-Schrieffer-Heeger Models" @default.
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- W4220865317 doi "https://doi.org/10.3389/fphy.2022.861242" @default.
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