Specific-Heat Measurement of Residual Superconductivity in the Normal State of Underdoped Cuprate Superconductors

Hai-Hu Wen, Gang Mu, Huiqian Luo +6

We have measured the magnetic field and temperature dependence of specific heat on $B{i}_{2}S{r}_{2-x}L{a}_{x}Cu{O}_{6+\delta }$ single crystals in wide doping and temperature regions. The supercond…