Vortices of mesoscopic rings in an external magnetic field: Phenomenological Ginzburg-Landau theory
Vortices of mesoscopic rings in an external magnetic field: Phenomenological Ginzburg-Landau theory
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外部磁场中介观环的涡旋:唯象金兹堡-朗道理论
DOI:
10.1103/physrevb.79.184518
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发表时间:
2009-05
影响因子:
3.7
通讯作者:
Shi, Liang-Ma
中科院分区:
文献类型:
--
作者:
Meng, Hao;Zhang, Ling-Feng;Zhou, Shi-Ping;Zha, Guo-Qiao;Zhao, Hong-Wei;Shi, Liang-Ma
Vortex states in mesoscopic superconducting rings are investigated by the phenomenological Ginzburg-Landau theory in the presence of an externally applied magnetic field. We obtain the cylindrical symmetric giant vortex states (GVS) by solving an eigenvalue problem and minimizing the system free energy. Ground state transitions between GVS and multivortex states are found as system dimensions and magnetic field vary. Metastability and negative flux jump associated with quantum size effect and proximity effect are revealed. Also, We find that the superconducting state and the normal state can alternately appear with external field increasing.
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通讯作者:
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