Hybridization gap in heavy fermion compounds

被引：148
|
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
收藏
页码：684 / 687
页数：4
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