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Nano-Contact Spin-Torque Oscillators as Magnonic Building Blocks
Stanford University, USA.
KTH, Skolan för informations- och kommunikationsteknik (ICT), Material- och nanofysik, Materialfysik, MF.
2013 (engelsk)Inngår i: Magnonics: From Fundamentals to Applications, Springer Berlin/Heidelberg, 2013, s. 177-187Kapittel i bok, del av antologi (Fagfellevurdert)
Abstract [en]

We describe the possibility of using nano-contact spin-torque oscillators (NC-STOs) as fundamental magnonic building blocks. NC-STOs can act as spin wave generators, manipulators, and detectors, and can hence realize all the fundamental functions necessary for fully integrated magnonic devices, which can be fabricated using available CMOS compatible large-scale spin-torque device production processes. We show in particular how a 200 nm sized nano-contact located on an out-of-plane magnetized permalloy "free" magnetic layer can generate spin waves at f approximate to 15 GHz that propagate up to 4 mu m away from the nano-contact with wavelength lambda = 200-300 nm, decay length lambda(r) approximate to 2 mu m and group velocities v(g) approximate to 3 mu m/ns. We propose that the same type of NC-STOs can be used as spin wave manipulators, via control of the local Gilbert damping, and as spin wave detector using the spin torque diode effect.

sted, utgiver, år, opplag, sider
Springer Berlin/Heidelberg, 2013. s. 177-187
Serie
Topics in Applied Physics, ISSN 0303-4216 ; 125
Emneord [en]
Ferromagnetic-Resonance, Magnetic Multilayers, Phase-Locking, Waves, Driven, Modulation, Excitation, Modes
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-125783DOI: 10.1007/978-3-642-30247-3_13ISI: 000321718800014Scopus ID: 2-s2.0-84879139114ISBN: 978-3-642-30246-6 (tryckt)OAI: oai:DiVA.org:kth-125783DiVA, id: diva2:640887
Merknad

QC 20130814

Tilgjengelig fra: 2013-08-14 Laget: 2013-08-13 Sist oppdatert: 2013-08-14bibliografisk kontrollert

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