Thermoelectric power of Sr₂RuO₄

Sr₂RuO₄ is the first non-CuO plane layered strong-correlated oxide superconductor. We have measured the thermopower on a Sr₂RuO₄ single crystal slab. The value keeps to be positive from room temperature to 9K. We used the two-carrier model to analyse the data and found both the electrons and holes have similar effect on the thermopower and Hall effect at low temperatures. But at high temperatures, the thermopower is mainly affected by the holes, which, however, are not the dominated contributor to the Hall effect.