Comparison of the hole concentration determined by transport measurement for the hole-doped cuprate superconductors

Abstract

We have compared the hole concentration (Ppl) determined by hole-scale based on the thermoelectric power at RT (S290) to the hole concentrations (P) determined by two popular hole-scales based on the superconducting critical temperature (Tc) and Hall coefficient (RH). While the hole concentrations based on different hole-scales are different, we show that when the Ppl is divided by either the effective unit cell volume (Veuc) which is the unit cell volume per one CuO2 plane or the optimal hole concentration Pplopt we can find some correlation between Ppl and P. That is, the normalized TcTc/TcPplopt and the Hall number (1/eRH) are well scaled with Ppl/Pplopt and Ppl/Veuc, respectively. We find that the Ppl-scale can map to and reproduce the other two hole-scales if proper dimensionality and normalization are taken into account but not vice versa.