Superconductivity in CuxBi2Se3 and its implications for pairing in the undoped topological insulator

Y. S. Hor, A. J. Williams, J. G. Checkelsky +7

Bi2Se3 is one of a handful of known topological insulators. Here we show that copper intercalation in the van der Waals gaps between the Bi2Se3 layers, yielding an electron concent…