{ "id": "cond-mat/0210342", "version": "v2", "published": "2002-10-16T13:11:58.000Z", "updated": "2003-04-03T19:50:53.000Z", "title": "Smearing of charge fluctuations in a grain by spin-flip assisted tunneling", "authors": [ "Karyn Le Hur", "Pascal Simon" ], "comment": "4 pages, 1 figure, final version for PRB Rapid Comm", "journal": "PRB 67, R201308 2003", "doi": "10.1103/PhysRevB.67.201308", "categories": [ "cond-mat.mes-hall", "cond-mat.str-el" ], "abstract": "We investigate the charge fluctuations of a grain (large dot) coupled to a lead via a small quantum dot in the Kondo regime. We show that the strong entanglement of charge and spin flips in this setup can result in a stable SU(4) Kondo fixed point, which considerably smears out the Coulomb staircase behavior already in the weak tunneling limit. This behavior is robust enough to be experimentally observable.", "revisions": [ { "version": "v2", "updated": "2003-04-03T19:50:53.000Z" } ], "analyses": { "keywords": [ "charge fluctuations", "spin-flip assisted tunneling", "small quantum dot", "coulomb staircase behavior", "kondo regime" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. B" }, "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable" } } }