Nernst effect in poor conductors and the cuprate superconductors

Abstract

We calculate the Nernst signal in disordered conductors with the chemical potential near the mobility edge. The Nernst effect originates from interference of itinerant and localised-carrier contributions to the thermomagnetic transport. It reveals a strong temperature and magnetic field dependence, which describes quantitatively the anomalous Nernst signal in high-Tc cuprates.

4 pages, 2 figures, thermopower is discussed, Fig.1 changed

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