Colloquium : Topological insulators

@article{Hasan2010ColloquiumT,
  title={Colloquium : Topological insulators},
  author={M Zahid Hasan and Charles L. Kane},
  journal={Reviews of Modern Physics},
  year={2010},
  volume={82},
  pages={3045-3067}
}
Topological insulators are electronic materials that have a bulk band gap like an ordinary insulator but have protected conducting states on their edge or surface. These states are possible due to the combination of spin-orbit interactions and time-reversal symmetry. The two-dimensional (2D) topological insulator is a quantum spin Hall insulator, which is a close cousin of the integer quantum Hall state. A three-dimensional (3D) topological insulator supports novel spin-polarized 2D Dirac… 

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