Josephson and Quasiparticle Tunneling between Anisotropically Paired Superconductors

Details Josephson and Quasiparticle Tunneling between Anisotropically Paired Superconductors Josephson and Quasiparticle Tunneling between Anisotropically Paired Superconductors

1996-04-05

arxiv.org/abs/cond-mat/9604034v2

Physics

Condensed Matter

25 pages, 7 Postscript figures, some additions and corrections are introduced, 5 postscript figures appended

Scientific paper

Charge transport in tunnel junctions between singlet anisotropically paired superconductors is investigated theoretically making use of the Eilenberger equations for the quasiclassical Green functions. For specularly reflecting tunnel barrier plane we have found and described analytically characteristic singular points of the I-V curves which are specific for the case of anisotropic pairing. All four terms for the electric current are examined. Two of them describe ac Josephson effect and two correspond to the quasiparticle current (the last term occurs only for a time-dependent voltage). Various momentum dependences of the order parameter in the bulk of superconductors and different crystal orientations are considered. The results of numerical calculations for the total I-V curves are presented for some particular cases.

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