Spin-wave theory for the dynamics induced by direct currents in magnetic multilayers
A spin-wave theory is presented for the magnetization dynamics in a ferromagnetic film that is traversed by spin-polarized carriers at high direct-current densities. It is shown that nonlinear effects due to four-magnon interactions arising from dipolar and surface anisotropy energies limit the grow...
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| Veröffentlicht in: | Physical review letters 2005-01, Vol.94 (3), p.037202.1-037202.4, Article 037202 |
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| container_end_page | 037202.4 |
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| container_issue | 3 |
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| container_title | Physical review letters |
| container_volume | 94 |
| creator | REZENDE, S. M DE AGUIAR, F. M AZEVEDO, A |
| description | A spin-wave theory is presented for the magnetization dynamics in a ferromagnetic film that is traversed by spin-polarized carriers at high direct-current densities. It is shown that nonlinear effects due to four-magnon interactions arising from dipolar and surface anisotropy energies limit the growth of the driven spin wave and produce shifts in the microwave frequency oscillations. The theory explains quantitatively recent experimental results in nanometric point contacts onto magnetic multilayers showing downward frequency shifts (redshifts) with increasing current, if the external field is on the film plane, and upward shifts (blueshifts), if the field is perpendicular to the film. |
| doi_str_mv | 10.1103/physrevlett.94.037202 |
| format | Article |
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The theory explains quantitatively recent experimental results in nanometric point contacts onto magnetic multilayers showing downward frequency shifts (redshifts) with increasing current, if the external field is on the film plane, and upward shifts (blueshifts), if the field is perpendicular to the film.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/physrevlett.94.037202</identifier><identifier>PMID: 15698315</identifier><identifier>CODEN: PRLTAO</identifier><language>eng</language><publisher>Ridge, NY: American Physical Society</publisher><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Exact sciences and technology ; Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures) ; Magnetic properties and materials ; Magnetic properties of surface, thin films and multilayers ; Physics</subject><ispartof>Physical review letters, 2005-01, Vol.94 (3), p.037202.1-037202.4, Article 037202</ispartof><rights>2005 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c403t-c8519fce0e7c0d6d9d592fcfc5394e55c1d541608de296a72b671c8be42219563</citedby><cites>FETCH-LOGICAL-c403t-c8519fce0e7c0d6d9d592fcfc5394e55c1d541608de296a72b671c8be42219563</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,782,786,2880,2881,27933,27934</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16521776$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15698315$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>REZENDE, S. 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The theory explains quantitatively recent experimental results in nanometric point contacts onto magnetic multilayers showing downward frequency shifts (redshifts) with increasing current, if the external field is on the film plane, and upward shifts (blueshifts), if the field is perpendicular to the film.</description><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Exact sciences and technology</subject><subject>Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures)</subject><subject>Magnetic properties and materials</subject><subject>Magnetic properties of surface, thin films and multilayers</subject><subject>Physics</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNpFkE2LFDEQhoMo7rj6E5Rc3FuPVUkn6Rxl0VUYUNz13GSSajfSH2OSnqX_vT3MwJ7qhXreKngYe4-wRQT56fC45ETHnkrZ2noL0ggQL9gGwdjKINYv2QZAYmUBzBV7k_NfAEChm9fsCpW2jUS1YQ_3hzhWT-5IvDzSlBbeTekUeVhGN0SfeRzD7Cnw_cJDTOQL93NKNJbTig_uz0glej7MfYm9Wyjlt-xV5_pM7y7zmv3--uXh9lu1-3H3_fbzrvI1yFL5RqHtPAEZD0EHG5QVne-8krYmpTwGVaOGJpCw2hmx1wZ9s6daCLRKy2t2c757SNO_mXJph5g99b0baZpzq02Nwki5guoM-jTlVVvXHlIcXFpahPaks_256vxFx92qs7V1e9a59j5cHsz7gcJz6-JvBT5eAJe967vkRh_zM6eVQGO0_A_pHYH_</recordid><startdate>20050128</startdate><enddate>20050128</enddate><creator>REZENDE, S. 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| language | eng |
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| source | American Physical Society Journals |
| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures) Magnetic properties and materials Magnetic properties of surface, thin films and multilayers Physics |
| title | Spin-wave theory for the dynamics induced by direct currents in magnetic multilayers |
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