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Resistivity saturation revisited: results from a dynamical mean field theory

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Type
Preprint
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Submission Date
Identifiers
DOI: 10.1103/PhysRevLett.82.2354
arXiv ID: cond-mat/9808188
Source
arXiv
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Abstract

We use the dynamical mean field method to study the high-temperature resistivity of electrons strongly coupled to phonons. The results reproduce the qualtiative behavior of the temperature and disorder dependence of the resistivity of the 'A-15' materials, which is commonly described in terms of saturation, but imply that the resistivity does not saturate. Rather, a change in temperature dependence occurs when the scattering becomes strong enough to cause a breakdown of the Migdal approximation.

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