Itinerant-electron theory of metamagnetism

被引：6
|
作者：
Nishiyama, Y
Hirooka, S
机构：
[1] Department of Electrical and Electronics Engineering, Kagoshima University
来源：
PHYSICAL REVIEW B | 1997年 / 56卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.56.7793
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Itinerant-electron theory of metamagnetism taking into account the effect of spin fluctuations is proposed on the Hubbard model within the static approximation in the functional integral formalism. It is possible to treat the metamagnetism of the system with large amplitudes of the moment and spin fluctuation. Effects of spin fluctuations and Stoner excitations on the temperature-dependence of paramagnetic susceptibility and the metamagnetic transition under external magnetic field are investigated numerically on a simple model (electronic) density of states. It is shown that both effects are quantitatively important in metamagnetism.
引用
收藏
页码：7793 / 7795
页数：3
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