Ferromagnetism in the strong hybridization regime of the periodic Anderson model

被引：11
|
作者：
Batista, CD [1 ]
Bonca, J
Gubernatis, JE
机构：
[1] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA
[2] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
[3] Univ Ljubljana, FMF, Dept Phys, Ljubljana, Slovenia
[4] Jozef Stefan Inst, Ljubljana, Slovenia
来源：
PHYSICAL REVIEW B | 2003年 / 68卷 / 06期
关键词：
D O I：
10.1103/PhysRevB.68.064403
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We determine exactly the ground state of the one-dimensional periodic Anderson model (PAM) in the strong hybridization regime. In this regime, the low energy sector of the PAM maps into an effective Hamiltonian that has a ferromagnetic ground state for any electron density between half and three-quarters filling. This rigorous result proves the existence of a new magnetic state that was excluded in the previous analysis of the mixed valence systems.
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页数：4
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