Fermi level pinning of a massive electron state in YbBiPt

被引：22

作者：

Oppeneer, PM

Antonov, VN

Yaresko, AN

Perlov, AY

Eschrig, H

机构：

[1] Max-Planck Research Group “Theory of Complex and Correlated Electron Systems”, University of Technology, Dresden

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.78.4079

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electronic structure of the heavy fermion compound YbBiPt is investigated using energy band calculations which account for strong on-site f-electron Coulomb correlations. We find that in the very low free-electron-like density near the Fermi level one extremely narrow 4f state becomes pinned at the Fermi energy E-F. The pinned 4f state gives,in the presence of antiferromagnetism, rise to massive electron behavior for which we calculate an unenhanced Sommerfeld constant of 0.25 J mol(-1) K-2 maximally.

引用

页码：4079 / 4082

页数：4

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