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Modulation of the Spectral Characteristics of a Nano-Contact Spin-Torque Oscillator via Spin Waves in an Adjacent Yttrium-Iron Garnet Film
Vise andre og tillknytning
2016 (engelsk)Inngår i: IEEE Magnetics Letters, ISSN 1949-307X, E-ISSN 1949-3088, Vol. 7, artikkel-id 3101704Artikkel i tidsskrift (Fagfellevurdert) Published
Resurstyp
Text
Abstract [en]

NiFe-Cu-Co trilayer nano-contact spin-torque oscillators (NC-STOs) fabricated on an yttrium-iron garnet (YIG) film were studied in two different modes. In passive mode, i.e. without any NC-STO auto-oscillations, a microwave current through the nano-contact can excite spin waves (SW) in the YIG film, and, vice versa, antenna generated SWs in the YIG film can be detected by the nano-contact. In active mode, i.e., in the presence of auto-oscillations, significant changes appear in the NC-STO spectrum when its frequency approaches that of the SWs excited in the YIG. These results demonstrate strong coupling between NC-STOs and SWs in YIG and open new possibilities of 1) pure spin-current generation in YIG by NC-STOs; 2) mutual locking of a number of NC-STOs through SWs in YIG; and 3) improvement of NC-STO spectra through SW feedback in YIG.

sted, utgiver, år, opplag, sider
Institute of Electrical and Electronics Engineers (IEEE), 2016. Vol. 7, artikkel-id 3101704
Emneord [en]
Spin electronics, nanocontact spin-torque oscillators, spin waves (SWs), yttrium iron garnet
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Identifikatorer
URN: urn:nbn:se:kth:diva-187857DOI: 10.1109/LMAG.2016.2530633ISI: 000374971700001Scopus ID: 2-s2.0-84966376444OAI: oai:DiVA.org:kth-187857DiVA, id: diva2:931921
Forskningsfinansiär
Swedish Research CouncilSwedish Foundation for Strategic Research Knut and Alice Wallenberg FoundationEU, FP7, Seventh Framework Programme, 307144
Merknad

QC 20160531

Tilgjengelig fra: 2016-05-31 Laget: 2016-05-30 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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