{ "id": "1512.07540", "version": "v1", "published": "2015-12-23T16:47:36.000Z", "updated": "2015-12-23T16:47:36.000Z", "title": "Density Functional Theory of the Seebeck coefficient in the Coulomb blockade regime", "authors": [ "Kaike Yang", "Enrico Perfetto", "Stefan Kurth", "Gianluca Stefanucci", "Roberto D'Agosta" ], "comment": "5 pages, 4 figures", "categories": [ "cond-mat.mes-hall" ], "abstract": "The Seebeck coefficient plays a fundamental role in identifying the efficiency of a thermoelectric device. Its theoretical evaluation for atomistic models is routinely based on Density Functional Theory calculations combined with the Landauer-B\\\"uttiker approach to quantum transport. This combination, however, suffers from serious drawbacks for devices in the Coulomb blockade regime. We show how to cure the theory through a simple correction in terms of the {\\em temperature derivative} of the exchange correlation potential. Our results compare well with both rate equations and experimental findings on carbon nanotubes.", "revisions": [ { "version": "v1", "updated": "2015-12-23T16:47:36.000Z" } ], "analyses": { "keywords": [ "coulomb blockade regime", "density functional theory calculations", "exchange correlation potential", "seebeck coefficient plays", "simple correction" ], "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable" } } }