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- W2404494053 abstract "Abstract We investigate the topological states of the two-dimensional hexagon lattice bilayer. The system exhibits a quantum valley Hall (QVH) state when the interlayer interaction t ⊥ is smaller than the nearest neighbor hopping energy t, and then translates to a trivial band insulator state when t ⊥ / t > 1 . Interestingly, the system is found to be a single-edge QVH state with t ⊥ / t = 1 . The topological phase transition also can be presented via changing bias voltage and sublattice potential in the system. The QVH states have different edge modes carrying valley current but no net charge current. The bias voltage and external electric field can be tuned easily in experiments, so the present results will provide potential application in valleytronics based on the two-dimensional hexagon lattice." @default.
- W2404494053 created "2016-06-24" @default.
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- W2404494053 date "2016-10-01" @default.
- W2404494053 modified "2023-10-16" @default.
- W2404494053 title "Topological states in two-dimensional hexagon lattice bilayers" @default.
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- W2404494053 doi "https://doi.org/10.1016/j.physleta.2016.05.039" @default.
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