Coherent Coupling of Double Quantum Dots Embedded in a Mesoscopic Ring
WU Shao-Quan1,2 , WANG Shun-Jin1
1 Institute of Modern Physics, Southwest Jiaotong University, Chengdu 610031
2 Department of Physics, Sichuan Normal University, Chengdu 610068
Coherent Coupling of Double Quantum Dots Embedded in a Mesoscopic Ring
WU Shao-Quan1,2 ;WANG Shun-Jin1
1 Institute of Modern Physics, Southwest Jiaotong University, Chengdu 610031
2 Department of Physics, Sichuan Normal University, Chengdu 610068
关键词 ：
72.10.Fk ,
72.15.Qm ,
73.23.Ra
Abstract ： We theoretically study the properties of the ground state of a series-coupled double quantum dot embedded in a mesoscopic ring in the Kondo regime by means of the two-impurity 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 possible candidate for future device applications.
Key words ：
72.10.Fk
72.15.Qm
73.23.Ra
出版日期: 2003-09-01
:
72.10.Fk
(Scattering by point defects, dislocations, surfaces, and other imperfections (including Kondo effect))
72.15.Qm
(Scattering mechanisms and Kondo effect)
73.23.Ra
(Persistent currents)
引用本文:
WU Shao-Quan;WANG Shun-Jin. Coherent Coupling of Double Quantum Dots Embedded in a Mesoscopic Ring[J]. 中国物理快报, 2003, 20(9): 1574-1577.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I9/1574
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2003, Vol. 20 
