{ "id": "0911.3854", "version": "v1", "published": "2009-11-19T17:55:31.000Z", "updated": "2009-11-19T17:55:31.000Z", "title": "Magnetic Anistropy due to the Casimir Effect", "authors": [ "G. Metalidis", "P. Bruno" ], "comment": "7 pages, 4 figures", "journal": "Phys. Rev. A 81, 022123 (2010)", "doi": "10.1103/PhysRevA.81.022123", "categories": [ "quant-ph", "cond-mat.mes-hall" ], "abstract": "We consider the Casimir interaction between a ferromagnetic and a non-magnetic mirror, and show how the Casimir effect gives rise to a magnetic anisotropy in the ferromagnetic layer. The anisotropy is out-of-plane if the non-magnetic plate is optically isotropic. If the non-magnetic plate shows a uniaxial optical anisotropy (with optical axis in the plate plane), we find an in-plane magnetic anisotropy. In both cases, the energetically most favorable magnetization orientation is given by the competition between polar, longitudinal and transverse contributions to the magneto-optical Kerr effect, and will therefore depend on the interplate distance. Numerical results will be presented for a magnetic plate made out of iron, and non-magnetic plates of gold (optically isotropic), quartz, calcite and barium titanate (all uniaxially birefringent).", "revisions": [ { "version": "v1", "updated": "2009-11-19T17:55:31.000Z" } ], "analyses": { "subjects": [ "12.20.Ds", "03.70.+k", "12.90.+b", "78.20.Ls" ], "keywords": [ "casimir effect", "magnetic anistropy", "non-magnetic plate", "optically isotropic", "in-plane magnetic anisotropy" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review A", "year": 2010, "month": "Feb", "volume": 81, "number": 2, "pages": "022123" }, "note": { "typesetting": "TeX", "pages": 7, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010PhRvA..81b2123M" } } }