{ "id": "cond-mat/0003170", "version": "v2", "published": "2000-03-10T12:18:55.000Z", "updated": "2000-11-10T14:34:59.000Z", "title": "Determination of the complex microwave photoconductance of a single quantum dot", "authors": [ "H. Qin", "F. Simmel", "R. H. Blick", "J. P. Kotthaus", "W. Wegscheider", "M. Bichler" ], "comment": "5.5 pages, 6 figures, accepted by Phys. Rev. B (Jan. B15 2001)", "doi": "10.1103/PhysRevB.63.035320", "categories": [ "cond-mat.mes-hall" ], "abstract": "A small quantum dot containing approximately 20 electrons is realized in a two-dimensional electron system of an AlGaAs/GaAs heterostructure. Conventional transport and microwave spectroscopy reveal the dot's electronic structure. By applying a coherently coupled two-source technique, we are able to determine the complex microwave induced tunnel current. The amplitude of this photoconductance resolves photon-assisted tunneling (PAT) in the non-linear regime through the ground state and an excited state as well. The out-of-phase component (susceptance) allows to study charge relaxation within the quantum dot on a time scale comparable to the microwave beat period.", "revisions": [ { "version": "v2", "updated": "2000-11-10T14:34:59.000Z" } ], "analyses": { "keywords": [ "single quantum dot", "complex microwave photoconductance", "quantum dot containing", "determination", "complex microwave induced tunnel current" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. B" }, "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable" } } }