paper

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

arXiv:2103.13277 · doi:10.1088/1751-8121/ac190c

Abstract

A weak topological insulator in dimension 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.

17 pages

The bulk-dislocation correspondence for weak topological insulators on screw-dislocated lattices · wovepaper