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Direct observation ...
Direct observation of a propagating spin wave induced by spin-transfer torque
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Madami, Marco (author)
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Bonetti, Stefano (author)
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Consolo, Giancarlo (author)
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Tacchi, Silvia (author)
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Carlotti, Giovanni (author)
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Gubbiotti, Gianluca (author)
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Mancoff, F. B. (author)
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- Yar, Mazher Ahmed (author)
- KTH,Funktionella material, FNM
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- Åkerman, Johan, 1970 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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(creator_code:org_t)
- 2011
- 2011
- English.
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In: Nature Nanotechnology. ; 6:10, s. 635-638
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Spin torque oscillators with nanoscale electrical contacts1, 2, 3, 4 are able to produce coherent spin waves in extended magnetic films, and offer an attractive combination of electrical and magnetic field control, broadband operation5, 6, fast spin-wave frequency modulation7, 8, 9, and the possibility of synchronizing multiple spin-wave injection sites10, 11. However, many potential applications rely on propagating (as opposed to localized) spin waves, and direct evidence for propagation has been lacking. Here, we directly observe a propagating spin wave launched from a spin torque oscillator with a nanoscale electrical contact into an extended Permalloy (nickel iron) film through the spin transfer torque effect. The data, obtained by wave-vector-resolved micro-focused Brillouin light scattering, show that spin waves with tunable frequencies can propagate for several micrometres. Micromagnetic simulations provide the theoretical support to quantitatively reproduce the results.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- magnetism
- spintronics
- magnonics
- microwave electronics
- NANO-OSCILLATORS
Publication and Content Type
- ref (subject category)
- art (subject category)
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Madami, Marco
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Bonetti, Stefano
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Consolo, Giancar ...
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Tacchi, Silvia
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Carlotti, Giovan ...
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Gubbiotti, Gianl ...
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show more...
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Mancoff, F. B.
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Yar, Mazher Ahme ...
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Åkerman, Johan, ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Other Engineerin ...
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and Other Engineerin ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
- Articles in the publication
- Nature Nanotechn ...
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Nature Nanotechn ...
- By the university
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University of Gothenburg
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Royal Institute of Technology