The bulk–dislocation correspondence for weak topological insulators on screw–dislocated lattices

  title={The bulk–dislocation correspondence for weak topological insulators on screw–dislocated lattices},
  author={Yosuke Kubota},
  journal={Journal of Physics A: Mathematical and Theoretical},
  • Yosuke Kubota
  • Published 2021
  • Physics, Mathematics
  • Journal of Physics A: Mathematical and Theoretical
A weak topological insulator in dimension three is known to have a topologically protected gapless mode along the screw dislocation. In this paper we formulate and prove this fact with the language of C *-algebra K-theory. The proof is based on the coarse index theory of the helical surface. 
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