Magnetic fluctuations of filled skutterudites emerging in the transition region between singlet and triplet states

被引：15

作者：

Hotta, T ^{[1
]}

机构：

[1] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.94.067003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In order to clarify magnetic properties of filled skutterudites, we analyze the Anderson model including seven f orbitals hybridized with an a(u) conduction band using a numerical technique. For n = 2 corresponding to Pr- based filled skutterudites, where n is the local f-electron number, even if the ground state is a singlet, there remain significant magnetic fluctuations from a triplet state with a small excitation energy. This result can be understood by the fact that f-electron states are clearly distinguished as itinerant and localized ones in the filled skutterudite structure. This picture also explains the complex results for f-electron magnetic susceptibility and entropy for n = 1 - 13.

引用

页数：4

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