Role of f electrons in rare-earth and uranium intermetallics-An alternative look at heavy-fermion phenomena

Details Role of f electrons in rare-earth and uranium intermetallics-An alternative look at heavy-fermion phenomena Role of f electrons in rare-earth and uranium intermetallics-An alternative look at heavy-fermion phenomena

1999-11-18

arxiv.org/abs/cond-mat/9911292v1

Acta Physica 4 (2007) 33

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages in RevTex, no figures

Scientific paper

The understanding of magnetic and electronic properties of rare-earth intermetallics is summarized. The properties of NdNi5 or ErNi5 are understood by considering a few electronic subsystems like the f electronic subsystem and the conduction-electron subsystem. The localized f electrons can give a substantial contribution to the low temperature specific heat with the entropy of R ln2 in case of Kramers ions. In this view the heavy-fermion behaviour is related with the removal of the Kramers degeneracy of the ground state of the f electronic subsystem.

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