{ "id": "cond-mat/0311086", "version": "v1", "published": "2003-11-04T23:45:58.000Z", "updated": "2003-11-04T23:45:58.000Z", "title": "Electron correlations in metal nanoparticles with spin-orbit scattering", "authors": [ "Denis A. Gorokhov", "Piet W. Brouwer" ], "comment": "RevTeX, 15 pages, 11 figures inserted", "journal": "Phys. Rev. B 69, 155417 (2004)", "doi": "10.1103/PhysRevB.69.155417", "categories": [ "cond-mat.mes-hall", "cond-mat.dis-nn", "cond-mat.mtrl-sci" ], "abstract": "The combined effect of electron-electron interactions and spin-orbit scattering in metal nanoparticles can be studied by measuring splitting of electron levels in magnetic field ($g$ factors) in tunneling spectroscopy experiments. Using random matrix theory to describe the single-electron states in the metal particle, we find that even a relatively small electron-electron interaction strength (ratio of exchange constant $J$ and mean level spacing $\\spacing$ $\\simeq 0.3$) significantly increases $g$-factor fluctuations for not-too-strong spin-orbit scattering rates (spin-orbit time $\\tau_{\\rm so} \\gtrsim 1/\\spacing$). In particular, $g$-factors larger than 2 could be observed. (This is a manifestation of the many-body correlation effects in nanoparticles). While so far measurements only on noble metal (Cu, Ag, Au) and Al samples have been done for which the effects of electron-electron interactions are negligible, we discuss the possibility of observing interaction effects in nanoparticles made of other metals.", "revisions": [ { "version": "v1", "updated": "2003-11-04T23:45:58.000Z" } ], "analyses": { "keywords": [ "metal nanoparticles", "electron correlations", "relatively small electron-electron interaction strength", "random matrix theory", "many-body correlation effects" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. B" }, "note": { "typesetting": "RevTeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable" } } }