PELTIER EFFECT IN NS MICROCONTACTS

Simple item page
dc.creatorBARDAS, A.
dc.creatorAVERIN, D.
dc.date1995-05-22
dc.date.accessioned2026-07-07T03:07:43Z
dc.date.available2026-07-07T03:07:43Z
dc.descriptionWe have calculated the heat current in the normal metal/insulator/ superconductor contacts with arbitrary transparency of the insulator barrier. In the tunneling limit (small transparencies), the heat flow out of the normal metal reaches its maximum at temperature $T\simeq 0.3Δ$. At higher values of transparency, the interplay between single-particle tunneling and Andreev reflection determines optimum transparency which maximizes the density of heat flow out of the normal metal. In clean contacts, the optimum transparency is about $0.1$ at $T=0.3Δ$ and decreases with temperature roughly as $(T/Δ)^{3/2}$. In disordered contacts, disorder enhances Andreev reflection and shifts the optimum point towards smaller transparencies. The optimal ratio of the barrier resistance to the resistance of the normal electrode is $R_N/R_T \simeq 0.01$ at $T=0.3 Δ$ and decreases with temperature similarly to clean contacts. For disordered contacts we also plot current-voltage characteristics for arbitrary values of the ratio $R_N/R_T$.
dc.description14 Pages, REVTEX 3.0, 6 figures available upon request
dc.identifierhttps://arxiv.org/abs/cond-mat/9505097
dc.identifierhttp://arxiv.org/abs/cond-mat/9505097
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/27272
dc.subjectCondensed Matter
dc.titlePELTIER EFFECT IN NS MICROCONTACTS
dc.typetext

Files

Collections

arXiv