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AbstractAbstract
[en] The superconducting proximity effect strongly modifies the local density of states in chaotic Josephson junctions. Recently we found that besides the well-known minigap a secondary gap appears just below the superconducting gap edge Δ in the limit of a large Thouless energy E_T_h >or similar Δ. To check the universality of this novel gap phenomenon we study the effect of nonideal contacts and show that the ''smile''-gap crucially depends on the transmission eigenvalue distribution. In a next step we use the random matrix method to investigate the ''smile''-gap. This allows us to approach the statistics of Andreev levels, going beyond the quasiclassical Greens function method. It turns out that the hard gap edge softens similar to what is already known from the minigap.
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79. Annual meeting of the DPG and DPG Spring meeting of the condensed matter section (SKM) together with the divisions history of physics, gravitation and relativity (toghether with the Astronomische Gesellschaft e.V.), microprobes, theoretical and mathematical physics and working groups energy, equal opportunities, information, philosophy of physics, physics and disarmament, young DPG; Berlin (Germany); 15-20 Mar 2015; Available from http://www.dpg-verhandlungen.de; Session: TT 54.2 Mi 10:00; No further information available; Also available as printed version: Verhandlungen der Deutschen Physikalischen Gesellschaft v. 50(3)
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Journal Article
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Conference
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Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195;
; CODEN VDPEAZ; (Berlin 2015 issue); [1 p.]

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