ANOMALOUS TRANSFERRED HYPERFINE COUPLING IN CECU2SI2

被引：50

作者：

OHAMA, T ^{[1
]}

YASUOKA, H ^{[1
]}

MANDRUS, D ^{[1
]}

FISK, Z ^{[1
]}

SMITH, JL ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1995年 / 64卷 / 07期

关键词：

CECU2SI2; HEAVY FERMION; CRYSTAL FIELD EFFECT; NMR; KNIGHT SHIFT; MAGNETIC SUSCEPTIBILITY;

D O I：

10.1143/JPSJ.64.2628

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetic susceptibility and the Cu and Si Knight shifts have been measured in CeCu2Si2. The transferred hyperfine couplings at both the sites are strongly temperature-dependent and noticeably anisotropic at low temperatures. The negative hyperfine couplings observed for the magnetic field along the c-axis al the low temperatures are anomalous as in Ce intermetallic compounds. It is pointed out that the transferred hyperfine coupling due to the hybridization of the f electrons with the ligand s electrons can be anisotropic and also can reverse its sign at the lower temperatures than the crystal-field splitting energy. It is concluded that this hybridization is the dominant mechanism of the transferred hyperfine coupling and responsible for the anomaly.

引用

页码：2628 / 2635

页数：8

共 30 条

[1] SI-29 NUCLEAR MAGNETIC-RESONANCE AND RELAXATION IN THE PARAMAGNETIC STATE OF CECU2SI2 [J].