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Zeitschrift für Physik B Condensed Matter
ISSN: 0722-3277 (printed version)
ISSN: 1431-584X (electronic version)
Abstract Volume 103 Issue 2 (1997) pp 161-164
A Hall effect without well-defined quasiparticles
J.P.D. Taras-Semchuk, J.M. Wheatley, A.J. Schofield
IRC in Superconductivity, Madingley Road, Cambridge CB3 OHE, UK
Abstract. Using a simple model of long-range impurity scattering, we illustrate how different transport and Hall relaxation rates may arise when the electron quasiparticle picture breaks down. We show how a broad and incoherent spectral function requires the use of a quantum version of the Boltzmann equation. This leads to unusual transport properties, in particular, a Hall relaxation rate which is independent of the quasiparticle scattering rate.
PACS: 72.15.Lh;72.10.-d;71.15.Cr
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