### Abstract

The problem of dc current flow through a superconductor-normal metal interface near the critical temperature T_{c}is considered. The equations for the Green's functions integrated with respect to the variable ζ = v(p-p_{0}) are used to calcuate the resistance of the pure and dirty superconductor S. It is shown that the electric field E decays exponentially over a length {Mathematical expression} within the superconductor and at the S-N interface there is a jump of E [strictly speaking, E varies over the correlation length ζ(T)]; here D is the diffusion coefficient, and Τ_{e}is the energy relaxation time. The magnitude of the jump of E is of the order of or less than the value of E at the boundary of the S region. In the case of a pure superconductor this jump is caused by the Andreev reflection of quasiparticles at the S-N interface.

Original language | English |
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Pages (from-to) | 487-502 |

Number of pages | 16 |

Journal | Journal of Low Temperature Physics |

Volume | 30 |

Issue number | 3-4 |

DOIs | |

Publication status | Published - Feb 1978 |

### ASJC Scopus subject areas

- Physics and Astronomy (miscellaneous)

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## Cite this

*Journal of Low Temperature Physics*,

*30*(3-4), 487-502. https://doi.org/10.1007/BF00114963