ABSTRACT

This chapter reviews the normal-state transport properties of the cuprates mainly from a fairly conventional band point of view. The transport properties of the cuprate normal state are unusual, and one must hesitate before adopting any particular model. In the cuprates, as in some alloy superconductors, the contributions to thermal conductivity of the charge carriers and the phonons are of the same order of magnitude. In dynamic equilibrium there must be field acting from hot to cold to cancel this flow, corresponding to a negative thermopower. The general magnitude of the Knight shift and the absence of local exchange fields also support a Fermi-liquid picture. Over the whole metallic doping range the band-structure Fermi surface continues to fit the arpes measurements, and the Fermi-liquid value of the Wilson ratio continues to fit the ratio of electronic heat capacity to Pauli susceptibility.