中国物理B ›› 1997, Vol. 6 ›› Issue (5): 348-355.doi: 10.1088/1004-423X/6/5/004

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SUPERCONDUCTING JUNCTIONS IN THE CASE OF CORRELATED SYMMETRIC NOISES

李静辉, 黄祖洽   

  1. Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875,China
  • 收稿日期:1996-09-16 出版日期:1997-05-20 发布日期:1997-05-20
  • 基金资助:
    Project supported by the State Education Commission through the Foundation of Doctoral Training, and by the National Basic Research Project "Nonlinear Science" of China.

SUPERCONDUCTING JUNCTIONS IN THE CASE OF CORRELATED SYMMETRIC NOISES

LI JING-HUI (李静辉), HUANG ZU-QIA (黄祖洽)   

  1. Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875,China
  • Received:1996-09-16 Online:1997-05-20 Published:1997-05-20
  • Supported by:
    Project supported by the State Education Commission through the Foundation of Doctoral Training, and by the National Basic Research Project "Nonlinear Science" of China.

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摘要： We study two models for Josephson junctions, i.e.,a Gaussian white noise model and a symmetric dichotomous noises model. In this study we find that the correlated symmetric noises can produce a net voltage. This phenomenon is due to the correlation between the additive and the multiplicative noises. We show some characteristic features for this phenomenon: the net voltage is always negative and has a peak value when the strength of the additive noises varies for the former model(or when the strengths of the noises vary for the latter model). The results provide a theoretical foundation for reducing the net voltage caused by the correlated symmetric noises.

Abstract: We study two models for Josephson junctions, i.e., a Gaussian white noise model and a symmetric dichotomous noises model. In this study we find that the correlated symmetric noises can produce a net voltage. This phenomenon is due to the correlation between the additive and the multiplicative noises. We show some characteristic features for this phenomenon: the net voltage is always negative and has a peak value when the strength of the additive noises varies for the former model(or when the strengths of the noises vary for the latter model). The results provide a theoretical foundation for reducing the net voltage caused by the correlated symmetric noises.

中图分类号: 

  • 74.40.+k
74.45.+c (Proximity effects; Andreev reflection; SN and SNS junctions) 74.50.+r (Tunneling phenomena; Josephson effects) 05.40.Ca (Noise)