Single-gap superconductivity and dome of superfluid density in Nb-doped SrTiO3

Markus Thiemann, Manfred H. Beutel, Martin Dressel +6

SrTiO${}_3$ exhibits a superconducting dome upon doping with Nb, with a maximum critical temperature \mbox{$T_{\mathrm{c}}\approx 0.4$~K}. Using microwave stripline resonators at freq…