Low Temperature Specific Heat of Doped SrTiO${}_3$: Doping Dependence of the Effective Mass and Kadowaki-Woods Scaling Violation

E. McCalla, M. N. Gastiasoro, G. Cassuto +2

We report wide-doping-range ($8\times 10^{17}$ to $4\times 10^{20}$ cm${}^{-3}$ Hall electron density) low temperature specific heat measurements on single crystal SrTiO${}_3$:Nb, co…