For dilute alloy in nonequilibrium, We showed that in DMR on the low temperature electrical resistivity, high orders of τ^1 _ph, E, n-(n≥2) obtained by the variation principle are more important than factor (T^2 and T^4) estimated by the coherent s...
For dilute alloy in nonequilibrium, We showed that in DMR on the low temperature electrical resistivity, high orders of τ^1 _ph, E, n-(n≥2) obtained by the variation principle are more important than factor (T^2 and T^4) estimated by the coherent scattering approch, through comparing the caculation of the coherent scttering mechanism with that of the variation principle.
We concluded that DMR at the low temperature must be determinded by solving the Boltzmann's transport equation with the Variation Principle including Phonon drag and Umklapp process.