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.
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收藏
页码：2336 / 2341
页数：6
相关论文
共 22 条
  • [1] Detecting the Kondo screening cloud around a quantum dot
    Affleck, I
    Simon, P
    [J]. PHYSICAL REVIEW LETTERS, 2001, 86 (13) : 2854 - 2857
  • [2] Out-of-equilibrium Kondo effect in double quantum dots
    Aguado, R
    Langreth, DC
    [J]. PHYSICAL REVIEW LETTERS, 2000, 85 (09) : 1946 - 1949
  • [3] Kondo resonant spectra in coupled quantum dots
    Aono, T
    Eto, M
    [J]. PHYSICAL REVIEW B, 2001, 63 (12)
  • [4] Transport in coupled quantum dots:: Kondo effect versus antiferromagnetic correlation
    Büsser, CA
    Anda, EV
    Lima, AL
    Davidovich, MA
    Chiappe, G
    [J]. PHYSICAL REVIEW B, 2000, 62 (15) : 9907 - 9910
  • [5] EFFECTS OF CONFIGURATION INTERACTION ON INTENSITIES AND PHASE SHIFTS
    FANO, U
    [J]. PHYSICAL REVIEW, 1961, 124 (06): : 1866 - &
  • [6] Spontaneous emission spectrum in double quantum dot devices
    Fujisawa, T
    Oosterkamp, TH
    van der Wiel, WG
    Broer, BW
    Aguado, R
    Tarucha, S
    Kouwenhoven, LP
    [J]. SCIENCE, 1998, 282 (5390) : 932 - 935
  • [7] Electronic correlations in transport through coupled quantum dots
    Georges, A
    Meir, Y
    [J]. PHYSICAL REVIEW LETTERS, 1999, 82 (17) : 3508 - 3511
  • [8] HEWSON AC, 1993, KONDO PROBLE HEAVY F
  • [9] Mesoscopic kondo screening effect in a single-electron transistor embedded in a metallic ring
    Hu, H
    Zhang, GM
    Yu, L
    [J]. PHYSICAL REVIEW LETTERS, 2001, 86 (24) : 5558 - 5561
  • [10] Two-impurity Kondo effect in double-quantum-dot systems: Effect of interdot kinetic exchange coupling
    Izumida, W
    Sakai, O
    [J]. PHYSICAL REVIEW B, 2000, 62 (15) : 10260 - 10267
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