Dumbbell stanane: a large-gap quantum spin hall insulator.

@article{Chen2015DumbbellSA,
  title={Dumbbell stanane: a large-gap quantum spin hall insulator.},
  author={Xin Chen and Linyang Li and Mingwen Zhao},
  journal={Physical chemistry chemical physics : PCCP},
  year={2015},
  volume={17 25},
  pages={
          16624-9
        }
}
A quantum spin Hall (QSH) effect is quite promising for applications in spintronics and quantum computations, but at present, can only be achieved at ultralow temperatures. The determination of large-gap QSH insulators is critical to increase the operating temperature. By using first-principles calculations, we demonstrate that the stable hydrogenated stanene with a dumbbell-like structure (DB stanane) has large topological nontrivial band gaps of 312 meV (Γ point) and 160 meV for the bulk… 
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