Interplay of Spin-Orbit Interaction and Electron Correlation on the Van Vleck Susceptibility in Transition Metal Compounds

被引：3

作者：

Udagawa, Masafumi ^{[1
]}

Yanase, Youichi ^{[2
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan

[2] Niigata Univ, Dept Phys, Niigata 9502181, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2010年 / 79卷 / 12期

关键词：

Van Vleck susceptibility; multi-orbital system; spin-orbit interaction; dynamical mean-field theory; EFFECTIVE MAGNETIC-MOMENTS; PERIODIC ANDERSON MODEL; KONDO LATTICES; WILSON RATIO; HEAVY FERMIONS; SUPERCONDUCTIVITY; SR2RUO4; FIELD;

D O I：

10.1143/JPSJ.79.123601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the effects of electron correlation on Van Vleck susceptibility (chi vv) in transition metal compounds. A typical crossover behavior is found for the correlation effect on chi vv as sweeping spin orbit interaction, lambda. For a small lambda, orbital fluctuation plays a dominant role in the correlation enhancement of chi vv; however, the enhancement rate is rather small. In contrast, for an intermediate lambda, chi vv shows a substantial increase, accompanied by the development of spin fluctuation. We will discuss the behavior of chi vv in association with the results of Knight-shift experiments on Sr2RuO4 and an anomalously large magnetic susceptibility observed for 5d Ir compounds.

引用

页数：4

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