Quantum interference in macroscopic crystals of non-metallic Bi${}_2$Se${}_3$

J. G. Checkelsky, Y. S. Hor, M. -H. Liu +3

Photoemission experiments have shown that Bi${}_2$Se${}_3$ is a topological insulator. By controlled doping, we have obtained crystals of Bi${}_2$Se${}_3$ with non-metallic conduction. At…