2015/05/06 by Szukiel, Aleksandra E.
#FOS: Physical sciences #Other Condensed Matter (cond-mat.other) #Strongly Correlated Electrons (cond-mat.str-el)
paper · doi:10.48550/arxiv.1505.01521
Contribution to thermal conductivity from conduction electron scattering on crystal field magnetic excitations is calculated and analyzed for normal rare-earth inter-metallic paramagnets. It is shown that in temperatures much lower than Debye temperature \TD its behavior essentially depends on the ground state of magnetic ion in crystal field and on the excitation energy in relation to \TD . Combined effect from the electron scattering on the crystal-field excitations, on acoustic phonons, and on nonmagnetic impurities is discussed in reference to CF splitting character and to the relative intensities of magnetic and non-magnetic scattering. Total thermal conductivity resulting from these three sources of scattering is calculated for REIn3 (RE= Nd, Pr, Tm) and compared with experimental data.