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CoFeB-Based Spin Hall Nano-Oscillators
Vise andre og tillknytning
2014 (engelsk)Inngår i: IEEE Magnetics Letters, ISSN 1949-307X, E-ISSN 1949-3088, Vol. 5, s. 3000504-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We demonstrate magnetization auto-oscillations driven by pure spin currents in spin Hall nano-oscillators based on CoFeB/Pt bilayers. Despite the very low anisotropic magnetoresistance of CoFeB, a substantial microwave signal power can be detected, even at room temperature, indicating that a sizable spin wave amplitude is generated. Spin torque ferromagnetic resonance measurements reveal that the generated auto-oscillation frequency lies below the ferromagnetic resonance frequency of CoFeB and is therefore well described by a self-localized spin wave bullet mode.

sted, utgiver, år, opplag, sider
2014. Vol. 5, s. 3000504-
Emneord [en]
Spin electronics, spin Hall nano-oscillators, spin torque ferromagnetic resonance, CoFeB
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-160426DOI: 10.1109/LMAG.2014.2375155ISI: 000347916300012Scopus ID: 2-s2.0-84919782894OAI: oai:DiVA.org:kth-160426DiVA, id: diva2:790049
Forskningsfinansiär
Swedish Foundation for Strategic Research Swedish Research CouncilKnut and Alice Wallenberg FoundationEU, European Research Council, 307144
Merknad

QC 20150223

Tilgjengelig fra: 2015-02-23 Laget: 2015-02-19 Sist oppdatert: 2017-12-04bibliografisk kontrollert

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