Influence of electron–phonon interaction and crystal field on thermal and electrical resistivity in rare earth intermetallics

Abstract

The thermal and electrical resistivity of f-electron cubic intermetallic metals with well localized and stable stable f-shells are calculated as functions of the temperature. The interaction of the conduction electron with both acoustic and optical phonons as well as the exchange s–f interaction with the crystal field presence are taken into account by applying the Matthiessen rule on the microscopic level and simple well-founded models of the scattering with the same mathematical method within the Boltzmann equation approach. Derived analytical formulas are successfully used to model existing measurements of temperature dependence of electric and thermal conductivity for DyIn3 and TmIn3 in the paramagnetic phase. Attention was drawn to the possible indeterminacy of some material constants in the absence of indications from sources other than transport measurements, noticeable in our results for TmIn3. Graphical abstract

Electronic and magnetic properties of intermetallic Kagome magnets $R$V$_6$Sn$_6$ ($R$ = Tb - Tm)

“…When we increase the magnetic field to 1 T, the anomaly was suppressed in resistivity. We thus attribute this consistent drop in ρ(T ) to the scattering of the conduction electrons by optical phonons if the magnetic sf contribution is neglected [36]. The possibility of Sn impurity superconductivity cannot be ruled out either.…”