{ "id": "1602.04013", "version": "v1", "published": "2016-02-12T11:10:13.000Z", "updated": "2016-02-12T11:10:13.000Z", "title": "Method for determining the residual electron- and hole- densities about the neutrality point over the gate-controlled n $\\leftrightarrow$ p transition in graphene", "authors": [ "Ramesh G. Mani" ], "comment": "4 figures", "journal": "Appl. Phys. lett. 108, 033507 (2016)", "categories": [ "cond-mat.mes-hall" ], "abstract": "The Hall effect, and the diagonal resistance, which indicates a residual resistivity $\\rho_{xx} \\approx h/4e^{2}$, are experimentally examined over the p$\\leftrightarrow$n transition about the nominal neutrality point in chemical vapor deposition (CVD) grown graphene. A distribution of neutrality potentials is invoked in conjunction with multi-carrier conduction to model the experimental observations. From the modeling, we extract the effective residual electron- and hole- densities around the nominal neutrality point. The results indicate mixed transport due to co-existing electrons and holes in large area zero-band gap CVD graphene devices, which indicates domain confined ambipolar currents broadly over the gate-induced n $\\leftrightarrow$ p transition.", "revisions": [ { "version": "v1", "updated": "2016-02-12T11:10:13.000Z" } ], "analyses": { "keywords": [ "nominal neutrality point", "transition", "large area zero-band gap cvd", "zero-band gap cvd graphene devices", "confined ambipolar currents" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }