Tunable Kondo effect of a three-terminal transport quantum dot embedded in an Aharonov-Bohm ring

被引：0
|
作者：
Chen, XW [1 ]
Shi, ZG
Wu, SQ
Song, KH
机构：
[1] Huaihua Univ, Dept Phys & Elect Informat Sci, Huaihua 418008, Peoples R China
[2] Huaihua Univ, Res Inst Informat Sci, Huaihua 418008, Peoples R China
[3] Sichuan Normal Univ, Dept Phys, Chengdu 610068, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2006年 / 23卷 / 02期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We theoretically investigate the Kondo effect of a three-terminal transport quantum dot (QD) embedded in an Aharonov-Bohm ring in the Kondo regime by means of the one-impurity Anderson Hamiltonian. The Hamiltonian is solved by means of the slave-boson mean-field theory We find that in this system, the Kondo effect depends sensitively on the parity and size of the ring; the Kondo screening cloud can be tuned by tuning the coupling strength of the reservoir-dot. Thus this model might be a candidate for future device applications.
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页码：439 / 442
页数：4
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