{ "id": "1103.0773", "version": "v1", "published": "2011-03-03T20:42:06.000Z", "updated": "2011-03-03T20:42:06.000Z", "title": "Relaxation mechanisms of the persistent spin helix", "authors": [ "Matthias C. Lüffe", "Janik Kailasvuori", "Tamara S. Nunner" ], "comment": "12 pages, 2 figures", "journal": "Phys. Rev. B 84, 075326 (2011)", "doi": "10.1103/PhysRevB.84.075326", "categories": [ "cond-mat.mes-hall", "cond-mat.mtrl-sci", "cond-mat.stat-mech" ], "abstract": "We study the lifetime of the persistent spin helix in semiconductor quantum wells with equal Rashba- and linear Dresselhaus spin-orbit interactions. In order to address the temperature dependence of the relevant spin relaxation mechanisms we derive and solve semiclassical spin diffusion equations taking into account spin-dependent impurity scattering, cubic Dresselhaus spin-orbit interactions and the effect of electron-electron interactions. For the experimentally relevant regime we find that the lifetime of the persistent spin helix is mainly determined by the interplay of cubic Dresselhaus spin-orbit interaction and electron-electron interactions. We propose that even longer lifetimes can be achieved by generating a spatially damped spin profile instead of the persistent spin helix state.", "revisions": [ { "version": "v1", "updated": "2011-03-03T20:42:06.000Z" } ], "analyses": { "subjects": [ "75.30.Fv", "75.40.Gb", "72.25.Dc" ], "keywords": [ "cubic dresselhaus spin-orbit interaction", "damped spin profile", "linear dresselhaus spin-orbit interactions", "persistent spin helix state", "relevant spin relaxation mechanisms" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review B", "year": 2011, "month": "Aug", "volume": 84, "number": 7, "pages": "075326" }, "note": { "typesetting": "TeX", "pages": 12, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2011PhRvB..84g5326L" } } }