Stable Flatbands, Topology, and Superconductivity of Magic Honeycomb Networks.

@article{Lee2020StableFT,
  title={Stable Flatbands, Topology, and Superconductivity of Magic Honeycomb Networks.},
  author={Jong-Nam Lee and C. Geng and J. W. Park and M. Oshikawa and Sung-Sik Lee and H. W. Yeom and G. Cho},
  journal={Physical review letters},
  year={2020},
  volume={124 13},
  pages={
          137002
        }
}
  • Jong-Nam Lee, C. Geng, +4 authors G. Cho
  • Published 2020
  • Physics, Medicine
  • Physical review letters
  • We propose a new principle to realize flatbands which are robust in real materials, based on a network superstructure of one-dimensional segments. This mechanism is naturally realized in the nearly commensurate charge-density wave of 1T-TaS_{2} with the honeycomb network of conducting domain walls, and the resulting flatband can naturally explain the enhanced superconductivity. We also show that corner states, which are a hallmark of the higher-order topological insulators, appear in the… CONTINUE READING

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