Multipole State of Heavy Lanthanide Filled Skutterudites

Details Multipole State of Heavy Lanthanide Filled Skutterudites Multipole State of Heavy Lanthanide Filled Skutterudites

2007-06-24

arxiv.org/abs/0706.3492v1

J. Phys. Soc. Jpn. 76, 083705 (2007).

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

10.1143/JPSJ.76.083705

We discuss multipole properties of filled skutterudites containing heavy lanthanide Ln from a microscopic viewpoint on the basis of a seven-orbital Anderson model. For Ln=Gd, in contrast to naive expectation, quadrupole moments remain in addition to main dipole ones. For Ln=Ho, we find an exotic state governed by octupole moment. For Ln=Tb and Tm, no significant multipole moments appear at low temperatures, while for Ln=Dy, Er, and Yb, dipole and higher-order multipoles are dominant. We briefly discuss possible relevance of these multipole states with actual materials.

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