{ "id": "1005.4403", "version": "v1", "published": "2010-05-24T19:33:35.000Z", "updated": "2010-05-24T19:33:35.000Z", "title": "Shot Noise Suppression and Hopping Conduction in Graphene Nanoribbons", "authors": [ "R. Danneau", "F. Wu", "M. Y. Tomi", "J. B. Oostinga", "A. F. Morpurgo", "P. J. Hakonen" ], "comment": "4 pages, 4 figures", "categories": [ "cond-mat.mes-hall" ], "abstract": "We have investigated shot noise and conduction of graphene field effect nanoribbon devices at low temperature. By analyzing the exponential $I-V$ characteristics of our devices in the transport gap region, we found out that transport follows variable range hopping laws at intermediate bias voltages $1 < V_{bias} < 12$ mV. In parallel, we observe a strong shot noise suppression leading to very low Fano factors. The strong suppression of shot noise is consistent with inelastic hopping, in crossover from one- to two-dimensional regime, indicating that the localization length $l_{loc} < W$ in our nanoribbons.", "revisions": [ { "version": "v1", "updated": "2010-05-24T19:33:35.000Z" } ], "analyses": { "subjects": [ "72.80.Vp", "73.50.Td" ], "keywords": [ "graphene nanoribbons", "hopping conduction", "shot noise suppression leading", "graphene field effect nanoribbon devices", "strong shot noise suppression" ], "tags": [ "journal article" ], "publication": { "doi": "10.1103/PhysRevB.82.161405", "journal": "Physical Review B", "year": 2010, "month": "Oct", "volume": 82, "number": 16, "pages": 161405 }, "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010PhRvB..82p1405D" } } }