Phase Coherence of Normal Electrons in Mesoscopic Composite Systems with Normal and Superconducting Segments

  • H. Ebisawa
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 109)


The phase memory of a normal electron is shown to vanish in a superconductor when its size is larger than ξ. Effects of the Andreev reflection on the conductance fluctuation and the A-B type oscillation in NSN composite wire systems are discussed. A simple conductance formula of the Landauer type is presented for a small system with a single superconducting segment.


Coherence Dition Maki 


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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • H. Ebisawa
    • 1
  1. 1.Department of Engineering ScienceTohoku UniversitySendai 980Japan

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