{ "id": "cond-mat/0104148", "version": "v1", "published": "2001-04-09T13:40:57.000Z", "updated": "2001-04-09T13:40:57.000Z", "title": "Nucleus-mediated spin-flip transitions in GaAs quantum dots", "authors": [ "Sigurdur I. Erlingsson", "Yuli V. Nazarov", "Vladimir I. Fal'ko" ], "comment": "RevTex 4 pages, 1 figure, submitted to Phys. Rev. B", "doi": "10.1103/PhysRevB.64.195306", "categories": [ "cond-mat.mes-hall" ], "abstract": "Spin-flip rates in GaAs quantum dots can be quite slow, thus opening up the possibilities to manipulate spin states in the dots. We present here estimations of inelastic spin-flip rates mediated by hyperfine interaction with nuclei. Under general assumptions the nucleus mediated rate is proportional to the phonon relaxation rate for the corresponding non-spin-flip transitions. The rate can be accelerated in the vicinity of a singlet-triplet excited states crossing. The small proportionality coefficient depends inversely on the number of nuclei in the quantum dot. We compare our results with known mechanisms of spin-flip in $GaAs$ quantum dot.", "revisions": [ { "version": "v1", "updated": "2001-04-09T13:40:57.000Z" } ], "analyses": { "keywords": [ "gaas quantum dots", "nucleus-mediated spin-flip transitions", "small proportionality coefficient depends", "inelastic spin-flip rates", "phonon relaxation rate" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. B" }, "note": { "typesetting": "RevTeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable" } } }