The persistent current in a mesoscopic Aharonov-Bohm ring with a series-coupled double quantum dot

被引：11

作者：

Wu, SQ ^{[1
]}

Chen, XW

Sun, WL

Wang, SJ

机构：

[1] Sichuan Normal Univ, Dept Phys, Chengdu 610068, Peoples R China

[2] Sw Jiaotong Univ, Inst Modern Phys, Chengdu 610031, Peoples R China

来源：

ACTA PHYSICA SINICA | 2004年 / 53卷 / 07期

关键词：

persistent current; coupled quantum dot; parity effect; Kondo effect;

D O I：

10.7498/aps.53.2336

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study theoretically the properties of the ground state of a mescopic ring with a series-coupled double quantum dot in the Kondo regime by means of the two-inpurity Anderson Hamiltonian. The Hamiltonian is solved by means of the slave-boson mean-field theory. It is shown that two dots can be coupled coherently, which is reflected in the appearance of parity effects and the complex current-phase relation in this system. This system might be a possile candidate for future device applications.

引用

页码：2336 / 2341

页数：6