{ "id": "cond-mat/0110248", "version": "v2", "published": "2001-10-11T18:36:37.000Z", "updated": "2002-03-28T22:35:37.000Z", "title": "The Collapse of the Spin-Singlet Phase in Quantum Dots", "authors": [ "M. Ciorga", "A. Wensauer", "M. Pioro-Ladriere", "M. Korkusinski", "Jordan Kyriakidis", "A. S. Sachrajda", "P. Hawrylak" ], "comment": "REVTeX4, 4 pages, 4 figures, to appear in PRL", "journal": "Phys. Rev. Lett. 88, 256804 (2002)", "doi": "10.1103/PhysRevLett.88.256804", "categories": [ "cond-mat.mes-hall" ], "abstract": "We present experimental and theoretical results on a new regime in quantum dots in which the filling factor 2 singlet state is replaced by new spin polarized phases. We make use of spin blockade spectroscopy to identify the transition to this new regime as a function of the number of electrons. The key experimental observation is a reversal of the phase in the systematic oscillation of the amplitude of Coulomb blockade peaks as the number of electrons is increased above a critical number. It is found theoretically that correlations are crucial to the existence of the new phases.", "revisions": [ { "version": "v2", "updated": "2002-03-28T22:35:37.000Z" } ], "analyses": { "keywords": [ "quantum dots", "spin-singlet phase", "coulomb blockade peaks", "spin blockade spectroscopy", "systematic oscillation" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. Lett." }, "note": { "typesetting": "RevTeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable" } } }