Test of the Wiedemann-Franz law in an optimally-doped cuprate

Romain Bel, Kamran Behnia, Cyril Proust +3

We present a study of heat and charge transport in Bi${}_{2+x}$Sr${}_{2-x}$CuO${}_{6+\delta }$ focused on the size of the low-temperature linear term of the thermal conductivity at optimal dop…