Superconductivity from the condensation of topological defects in a quantum spin-Hall insulator

  title={Superconductivity from the condensation of topological defects in a quantum spin-Hall insulator},
  author={Yuhai Liu and Zhenjiu Wang and Toshihiro Sato and Martin Hohenadler and Chong Wang and Wenan Guo and Fakher F. Assaad},
  journal={Nature Communications},
The discovery of quantum spin-Hall (QSH) insulators has brought topology to the forefront of condensed matter physics. While a QSH state from spin-orbit coupling can be fully understood in terms of band theory, fascinating many-body effects are expected if it instead results from spontaneous symmetry breaking. Here, we introduce a model of interacting Dirac fermions where a QSH state is dynamically generated. Our tuning parameter further allows us to destabilize the QSH state in favour of a… 

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