{ "id": "cond-mat/0404064", "version": "v3", "published": "2004-04-03T01:56:35.000Z", "updated": "2005-01-25T16:28:11.000Z", "title": "Pumped spin-current and shot noise spectra in a single quantum dot", "authors": [ "Bing Dong", "H. L. Cui", "X. L. Lei" ], "comment": "4 pages, 3 figures, to be published in Phys. Rev. Letter", "journal": "Phys. Rev. Lett. 94, 066601 (2005)", "doi": "10.1103/PhysRevLett.94.066601", "categories": [ "cond-mat.mes-hall" ], "abstract": "We exploit the pumped spin-current and current noise spectra under equilibrium condition in a single quantum dot connected to two normal leads, as an electrical scheme for detection of the electron spin resonance (ESR) and decoherence. We propose spin-resolved quantum rate equations with correlation functions in Laplace-space for the analytical derivation of the zero-frequency atuo- and cross-shot noise spectra of charge- and spin-current. Our results show that in the strong Coulomb blockade regime, ESR-induced spin flip generates a finite spin-current and the quantum partition noises in the absence of net charge transport. Moreover, spin shot noise is closely related to the magnetic Rabi frequency and decoherence and would be a sensitive tool to measure them.", "revisions": [ { "version": "v3", "updated": "2005-01-25T16:28:11.000Z" } ], "analyses": { "keywords": [ "single quantum dot", "pumped spin-current", "strong coulomb blockade regime", "spin-resolved quantum rate equations", "current noise spectra" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. Lett." }, "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable" } } }