Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crystal field influence on the thermal conductivity of the rare-earth
  metallic paramagnets   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 $RE$In$_3$
($RE=\,$Nd,\,Pr,\,Tm) and compared with experimental data.

14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
3
The categories of this paper are: physics