Multipole State of Heavy Lanthanide Filled Skutterudites

Abstract

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.

5 pages, 3 figures

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Cited by in corpus (6)

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• Microscopic analysis of multipole susceptibility of actinide dioxides: A scenario of multipole ordering in AmO${}_2$
• Multipole as $f$-Electron Spin-Charge Density in Filled Skutterudites
• Quadrupole Susceptibility of Gd-Based Filled Skutterudite Compounds
• Construction of a Microscopic Model for Yb and Tm Compounds on the Basis of a $\mib{j}$-$\mib{j}$ Coupling Scheme
• Microscopic Theory of ${\Gamma }_3$ Quadrupole Ordering in Pr Compounds on the Basis of a $j$-$j$ Coupling Scheme