Doping dependence of the superconducting gap in Tl_2Ba_2CuO_{6+delta} from heat transport

D. G. Hawthorn, S. Y. Li, M. Sutherland +12

We present low-temperature thermal conductivity measurements on the cuprate Tl_2Ba_2CuO_{6+delta} throughout the overdoped regime. In the T -> 0 limit, the thermal conductivity due…