Multiple nodeless superconducting gaps in optimally-doped SrTi${}_{1-x}$Nb${}_x$O${}_3$

Xiao Lin, Adrien Gourgout, German Bridoux +5

We present the first study of thermal conductivity in superconducting SrTi${}_{1-x}$Nb${}_x$O${}_3$, sufficiently doped to be near its maximum critical temperature. The bulk critical…