{ "id": "1008.0948", "version": "v2", "published": "2010-08-05T11:28:44.000Z", "updated": "2010-11-12T08:47:02.000Z", "title": "Influence of spin waves on transport through a quantum-dot spin valve", "authors": [ "Björn Sothmann", "Jürgen König", "Anatoli Kadigrobov" ], "comment": "published version, 15 pages, 10 figures", "journal": "Phys. Rev. B 82, 205314 (2010)", "doi": "10.1103/PhysRevB.82.205314", "categories": [ "cond-mat.mes-hall" ], "abstract": "We study the influence of spin waves on transport through a single-level quantum dot weakly coupled to ferromagnetic electrodes with noncollinear magnetizations. Side peaks appear in the differential conductance due to emission and absorption of spin waves. We, furthermore, investigate the nonequilibrium magnon distributions generated in the source and drain lead. In addition, we show how magnon-assisted tunneling can generate a fullly spin-polarized current without an applied transport voltage. We discuss the influence of spin waves on the current noise. Finally, we show how the magnonic contributions to the exchange field can be detected in the finite-frequency Fano factor.", "revisions": [ { "version": "v2", "updated": "2010-11-12T08:47:02.000Z" } ], "analyses": { "subjects": [ "72.25.Mk", "85.75.-d", "73.23.Hk", "72.70.+m" ], "keywords": [ "spin waves", "quantum-dot spin valve", "quantum dot", "nonequilibrium magnon distributions", "side peaks appear" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review B", "year": 2010, "month": "Nov", "volume": 82, "number": 20, "pages": 205314 }, "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010PhRvB..82t5314S" } } }