Resistivity Saturation Revisited: Results from a Dynamical Mean Field Theory

A. J. Millis, Jun Hu, S. Das Sarma
1999 Physical Review Letters  
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.
doi:10.1103/physrevlett.82.2354 fatcat:p2bqzaazsvh4bd6pbxgbugzzze