Phase dependent differential thermopower of SND junctions: Pair-breaking effects and Gaussian fluctuations

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dc.creatorSergeenkov, Sergei
dc.creatorAusloos, Marcel
dc.date1999-02-18
dc.date.accessioned2026-07-07T03:12:51Z
dc.date.available2026-07-07T03:12:51Z
dc.descriptionWe start with revisiting our previous results on thermoelectric response of SNS configuration in a C-shaped Bi(x)Pb(1-x)Sr(2)CaCu(2)O(y) sample in order to include strong fluctuation effects. Then, by appropriate generalization of the Ginzburg-Landau theory based on admixture of s-wave and d-wave superconductors, we consider a differential thermoelectric power (TEP) of SND junction. In addition to its strong dependence on the relative phase θ=ϕ_s-ϕ_d between the two superconductors, two major effects are shown to influence the behavior of the predicted TEP. One, based on the chemical imbalance at SD interface, results in a pronounced maximum of the TEP peak near θ=π/2 (where the so-called s+id mixed pairing state is formed) for two identical superconductors (with T_d=T_s\equiv T_c). Another effect, which should manifest itself at SD interface comprising an s-wave low-T_c superconductor and a d-wave high-T_c superconductor (with T_d\neq T_s), predicts S_p\propto T_d-T_s for the TEP peak value. The experimental conditions under which the predicted behavior of the induced differential TEP can be measured are discussed.
dc.description10 pages (REVTEX), 4 PS figures (epsf.sty). To be published in PRB
dc.identifierhttps://arxiv.org/abs/cond-mat/9902259
dc.identifierhttp://arxiv.org/abs/cond-mat/9902259
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/29071
dc.subjectSuperconductivity
dc.titlePhase dependent differential thermopower of SND junctions: Pair-breaking effects and Gaussian fluctuations
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