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Current reversals in an inhomogeneous system with asymmetric unbiased fluctuations

  • Bao-Quan Ai
  • Xian-Ju Wang
  • Guo-Tao Liu
  • Hui-Zhang Xie
  • De-Hua Wen
  • Wei Chen
  • Liang-Gang Liu
Article

Abstract.

We present a study of the transport of a Brownian particle moving in a periodic symmetric potential in the presence of asymmetric unbiased fluctuations. The particle is considered to move in a medium with periodic space dependent friction. By tuning the parameters of the system, the direction of the current exhibits reversals, both as a function of temperature as well as the amplitude of rocking force. We found that the mutual interplay between the opposite driving factors is the necessary term for current reversals.

Keywords

Brownian Particle Current Reversal Inhomogeneous System Symmetric Potential Drive Factor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  • Bao-Quan Ai
    • 1
  • Xian-Ju Wang
    • 1
  • Guo-Tao Liu
    • 1
  • Hui-Zhang Xie
    • 2
  • De-Hua Wen
    • 1
    • 2
  • Wei Chen
    • 3
  • Liang-Gang Liu
    • 1
  1. 1.Department of PhysicsZhongShan UniversityGuangZhouP.R. China
  2. 2.Department of PhysicsSouth China University of technologyGuangZhouP.R. China
  3. 3.Department of PhysicsJiNan UniversityGuangZhouP.R. China

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