Chin. Phys. Lett.  2003, Vol. 20 Issue (9): 1574-1577    DOI:
Original Articles |
Coherent Coupling of Double Quantum Dots Embedded in a Mesoscopic Ring
WU Shao-Quan1,2;WANG Shun-Jin1
1Institute of Modern Physics, Southwest Jiaotong University, Chengdu 610031 2Department of Physics, Sichuan Normal University, Chengdu 610068
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WU Shao-Quan, WANG Shun-Jin 2003 Chin. Phys. Lett. 20 1574-1577
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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.
Keywords: 72.10.Fk      72.15.Qm      73.23.Ra     
Published: 01 September 2003
PACS:  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)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2003/V20/I9/01574
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