Topological surface state in the Kondo insulator samarium hexaboride.

@article{Kim2014TopologicalSS,
  title={Topological surface state in the Kondo insulator samarium hexaboride.},
  author={D. J. Kim and Jing Xia and Zachary Fisk},
  journal={Nature materials},
  year={2014},
  volume={13 5},
  pages={
          466-70
        }
}
Topological invariants of electron wavefunctions in condensed matter reveal many intriguing phenomena. A notable example is provided by topological insulators, which are characterized by an insulating bulk coexisting with a metallic boundary state. Although there has been intense interest in Bi-based topological insulators, their behaviour is complicated by the presence of a considerable residual bulk conductivity. Theories predict that the Kondo insulator system SmB6, which is known to undergo… 
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