{ "id": "cond-mat/0501477", "version": "v2", "published": "2005-01-20T04:07:41.000Z", "updated": "2005-04-18T15:22:06.000Z", "title": "Thermal conductance of Andreev interferometers", "authors": [ "Z. Jiang", "V. Chandrasekhar" ], "comment": "5 pages, 4 figures", "journal": "PRL 94, 147002 (2005)", "doi": "10.1103/PhysRevLett.94.147002", "categories": [ "cond-mat.mes-hall" ], "abstract": "We calculate the thermal conductance $G^T$ of diffusive Andreev interferometers, which are hybrid loops with one superconducting arm and one normal-metal arm. The presence of the superconductor suppresses $G^T$; however, unlike a conventional superconductor, $G^T/G^T_N$ does not vanish as the temperature $T\\to0$, but saturates at a finite value that depends on the resistance of the normal-superconducting interfaces, and their distance from the path of the temperature gradient. The reduction of $G^T$ is determined primarily by the suppression of the density of states in the proximity-coupled normal metal along the path of the temperature gradient. $G^T$ is also a strongly nonlinear function of the thermal current, as found in recent experiments.", "revisions": [ { "version": "v2", "updated": "2005-04-18T15:22:06.000Z" } ], "analyses": { "keywords": [ "thermal conductance", "temperature gradient", "normal-metal arm", "superconductor suppresses", "thermal current" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. Lett." }, "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable" } } }