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Nano-Contact Spin-Torque Oscillators as Magnonic Building Blocks
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- Bonetti, Stefano (author)
- Stanford University, USA
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- Åkerman, Johan (author)
- Gothenburg University,Göteborgs universitet,KTH,Materialfysik, MF,Institutionen för fysik (GU),Department of Physics (GU)
- (creator_code:org_t)
- 2012-08-15
- 2013
- English.
- In: Magnonics. - Berlin, Heidelberg : Springer Berlin/Heidelberg. - 9783642302466 ; , s. 177-187, s. kapitel 13 s 177-187
- Book chapter (peer-reviewed)
Abstract
Subject headings
Close
- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Ferromagnetic-Resonance
- Magnetic Multilayers
- Phase-Locking
- Waves
- Driven
- Modulation
- Excitation
- Modes
- magnetism
- spintronics
- magnonics
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- ref (subject category)
- kap (subject category)
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- Royal Institute of Technology
- University of Gothenburg
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