Influence of electron–phonon interaction and crystal field on thermal and electrical resistivity in rare earth intermetallics
W. Trzebiatowski Institute of Low temperature and Structure Research, Polish Academy of Sciences,
P.O. Box 937,
a e-mail: firstname.lastname@example.org
Received in final form: 29 March 2020
Published online: 25 May 2020
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.
Key words: Solid State and Materials
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