Hybridization gap in heavy fermion compounds

被引：149

作者：

Dordevic, SV ^{[1
]}

Basov, DN

Dilley, NR

Bauer, ED

Maple, MB

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Univ Calif San Diego, Inst Pure & Appl Phys Sci, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.86.684

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the results of optical studies of new heavy fermion compounds YbFe4Sb12 and CeRu4Sb12. We show that these compounds, as well as several other heavy fermion materials with a nonmagnetic ground state, obey a universal scaling relationship between the quasiparticle effective mass m* and the magnitude of the energy gap Delta in the excitation spectrum. This result is in accord with the picture of hybridization of localized f-electron and free carrier states. DOI: 10.1103/PhysRevLett.86.684.

引用

页码：684 / 687

页数：4

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