Dynamical Mean-Field Study of Metamagnetism in Heavy Fermion Systems

被引：1
作者：
Yamada, Takemi [1 ]
Ono, Yoshiaki [1 ]
机构：
[1] Niigata Univ, Dept Phys, Nishi Ku, Niigata 9502181, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2011年 / 80卷
关键词：
heavy fermion system; dynamical mean-field theory; periodic Anderson model; metamagnetism; CeRu2Si2;
D O I：
10.1143/JPSJS.80SA.SA131
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the metamagnetism in the periodic Anderson model with the k-dependent c - f mixing by using the dynamical mean-field theory combined with the exact diagonalization method. It is found that both effects of the k-dependent c - f mixing and strong correlation due to the Coulomb interaction between f electrons are significant for determining both the magnetization and the mass enhancement factor. For the case away from the half-filling, the results is consistent with the metamagnetic behavior observed in CeRu2Si2
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页数：3
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