Effect of crystalline electric field on heavy fermions:: Fermi liquid state with f2-singlet configuration

被引：21

作者：

Ikeda, H

Miyake, K

机构：

[1] Natl Inst Adv Interdisciplinary Res, JRCAT, Tsukuba, Ibaraki 305, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Dept Phys Sci, Toyonaka, Osaka 560, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1997年 / 66卷 / 12期

关键词：

U-based heavy Fermion; crystalline electric field; f(2)-singlet ground state; zero spin sound; UPt3;

D O I：

10.1143/JPSJ.66.3714

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Fermi liquid description of heavy Fermions with the f(0) - f(1) - f(2) configuration is studied by using the slave boson technique. In particular, it is shown that a new type of Fermi liquid state is realized in the case where the f(2) configuration with a singlet crystal field ground state is predominant. Namely, the quasiparticle contribution chi(qp) to the magnetic susceptibility is not enhanced while the density of states of quasiparticle is enhanced producing the heavy Fermions. A relevance to an anomalously small reduction of the Knight shift across the superconducting transition observed in UPt3 is discussed.

引用

页码：3714 / 3717

页数：4