中国物理B ›› 2001, Vol. 10 ›› Issue (12): 1154-1156.doi: 10.1088/1009-1963/10/12/314

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

DYNAMICAL BEHAVIOUR OF THE SUPERCURRENT IN MESOSCOPIC JOSEPHSON JUNCTIONS

俞开智, 邹健, 邵彬   

  1. Department of Applied Physics, Beijing Institute of Technology, Beijing 100081, China
  • 收稿日期:2001-07-05 修回日期:2001-07-20 出版日期:2005-06-12 发布日期:2005-06-12

DYNAMICAL BEHAVIOUR OF THE SUPERCURRENT IN MESOSCOPIC JOSEPHSON JUNCTIONS

Yu Kai-zhi (俞开智), Zou Jian (邹健), Shao Bin (邵彬)   

  1. Department of Applied Physics, Beijing Institute of Technology, Beijing 100081, China
  • Received:2001-07-05 Revised:2001-07-20 Online:2005-06-12 Published:2005-06-12

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摘要： In this paper we use a numerical method to study the quantum effect of dynamical localization on the supercurrent in a mesoscopic Josephson junction driven by a periodically external electromagnetic field. We find that the charge is localized effectively when the ratio of the field magnitude and the field frequency equal some critical values, and in these cases the amplitude of the oscillation of the supercurrent will remain constant.

Abstract: In this paper we use a numerical method to study the quantum effect of dynamical localization on the supercurrent in a mesoscopic Josephson junction driven by a periodically external electromagnetic field. We find that the charge is localized effectively when the ratio of the field magnitude and the field frequency equal some critical values, and in these cases the amplitude of the oscillation of the supercurrent will remain constant.

Key words: mesoscopic Josephson junction, dynamical localization, supercurrent

中图分类号:  (Mesoscopic and nanoscale systems)

  • 74.78.Na
74.50.+r (Tunneling phenomena; Josephson effects)