Two-impurity Kondo problem for correlated electrons

被引：22
作者：
Hallberg, K [1 ]
Egger, R [1 ]
机构：
[1] UNIV FREIBURG, FAK PHYS, D-79104 FREIBURG, GERMANY
来源：
PHYSICAL REVIEW B | 1997年 / 55卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.55.R8646
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The behavior of two magnetic impurities coupled to correlated electrons in one dimension is studied using the density-matrix renormalization-group technique for several fillings. Onsite Coulomb interactions among the electrons lead to a small Kondo screening cloud and an overall suppression of magnetic order. For arbitrary electronic correlations and large interimpurity distances R, we find a 1/R-2 decay of magnetic correlations.
引用
收藏
页码：R8646 / R8649
页数：4
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