Structural distortion behind the nematic superconductivity in Sr${}_x$Bi${}_2$Se${}_3$

A. Yu. Kuntsevich, M. A. Bryzgalov, V. A. Prudkoglyad +3

An archetypical layered topological insulator Bi${}_2$Se${}_3$ becomes superconductive upon doping with Sr, Nb or Cu. Superconducting properties of these materials in the presence of i…