{ "id": "1408.0507", "version": "v2", "published": "2014-08-03T16:23:15.000Z", "updated": "2014-12-05T10:05:48.000Z", "title": "Power dissipation in a single molecule junction: Tracking energy levels", "authors": [ "Yaghoob Naimi", "Javad Vahedi" ], "comment": "9 pages, 6 figures", "categories": [ "cond-mat.mes-hall", "quant-ph" ], "abstract": "Motivated by recent work [Lee et al. Nature {\\bf 489}, 209 (2013)], on asymmetry features of heat dissipation in the electrodes of molecular junctions, we put forward an idea as a result of heat dissipation in the electrodes. Based on tight-binding model and a generalized Green's function formalism, we describe the conditions under which heat dissipation shows symmetry characteristic and does not depend on the bias polarity. We also show the power dissipated in the junction can be used to detect which energy levels of molecule junction play more or less role in the transmission process. We present this idea by studying a simple toy model and Au-$C_{60}$-Au junction.", "revisions": [ { "version": "v1", "updated": "2014-08-03T16:23:15.000Z", "title": "Heat dissipation in a single molecule junction: Effects of quantum interference", "abstract": "Motivated by recent work [Lee et al. Nature {\\bf 489}, 209 (2013)], on asymmetry features of heat dissipation in the electrodes of molecular junctions, we put forward a new idea as result of destructive quantum interference. Based on tight-binding model and a generalized Green's function formalism, we show how quantum interference can introduce symmetry feature on heat dissipation in electrodes. We present this idea by studying a simple toy model and Au-C60-Au junction. The analysis of quantum interference effects on the heat dissipation of molecular junctions may be helpful in designing thermoelectric devices.", "comment": "8 pages, 5 figures", "journal": null, "doi": null }, { "version": "v2", "updated": "2014-12-05T10:05:48.000Z" } ], "analyses": { "keywords": [ "heat dissipation", "single molecule junction", "molecular junctions", "generalized greens function formalism", "simple toy model" ], "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable" } } }