On the contribution of the superconductor to the resistance of a superconductor-normal metal system

S. N. Artemenko, A. F. Volkov, A. V. Zaitsev

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The problem of dc current flow through a superconductor-normal metal interface near the critical temperature Tcis considered. The equations for the Green's functions integrated with respect to the variable ζ = v(p-p0) 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 Τeis 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 languageEnglish
Pages (from-to)487-502
Number of pages16
JournalJournal of Low Temperature Physics
Issue number3-4
Publication statusPublished - Feb 1978


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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