{ "id": "cond-mat/0405538", "version": "v2", "published": "2004-05-23T15:12:24.000Z", "updated": "2004-11-25T03:06:07.000Z", "title": "Mesoscopic Kondo effect of a quantum dot embedded in an Aharonov-Bohm ring with intradot spin-flip scattering", "authors": [ "Bing Dong", "G. H. Ding", "H. L. Cui", "X. L. Lei" ], "comment": "7 pages,6 figures, to be published by Europhys. Lett", "journal": "Europhys. Lett. 69, 424, (2005)", "doi": "10.1209/epl/i2004-10363-6", "categories": [ "cond-mat.mes-hall", "cond-mat.str-el" ], "abstract": "We study the Kondo effect in a quantum dot embedded in a mesoscopic ring taking into account intradot spin-flip scattering $R$. Based on the finite-$U$ slave-boson mean-field approach, we find that the Kondo peak in the density of states is split into two peaks by this coherent spin-flip transition, which is responsible for some interesting features of the Kondo-assisted persistent current circulating the ring: (1) strong suppression and crossover to a sine function form with increasing $R$; (2) appearance of a \"hump\" in the $R$-dependent behavior for odd parity. $R$-induced reverse of the persistent current direction is also observed for odd parity.", "revisions": [ { "version": "v2", "updated": "2004-11-25T03:06:07.000Z" } ], "analyses": { "keywords": [ "intradot spin-flip scattering", "quantum dot", "mesoscopic kondo effect", "aharonov-bohm ring", "persistent current" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 7, "language": "en", "license": "arXiv", "status": "editable" } } }