Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-08-18
Physics
Condensed Matter
Strongly Correlated Electrons
Minor revisions in response to referee report; latex error corrected so paper prints properly
Scientific paper
10.1103/PhysRevLett.82.2354
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.
Hu Jun
Millis Andrew. J.
Sarma Sankar Das
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