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.
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页数：4
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