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Spin torque oscilla...
Spin torque oscillator frequency versus magnetic field angle : The prospect of operation beyond 65 GHz
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- Bonetti, Stefano (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
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- Muduli, Pranaba (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
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Mancoff, Fred (author)
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- Åkerman, Johan (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
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(creator_code:org_t)
- AIP Publishing, 2009
- 2009
- English.
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In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 94:10
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We study the impact of the magnetic field angle on the oscillation frequency of a nanocontact spin torque oscillator (STO) in magnetic fields up to 2.1 T. A model based on a single nonlinear, nonpropagating spin wave mode is found to explain the experimental data. We observe oscillation frequencies as high as 46 GHz in high magnetic fields applied normal to the film plane, and we are able to extrapolate the maximum expected operating frequency to beyond 65 GHz for in-plane magnetic fields. The STO signal remains surprisingly strong at these conditions, which opens up for possible millimeter-wave applications.
Keyword
- cobalt alloys
- copper
- iron alloys
- nanocontacts
- nanoelectronics
- nickel alloys
- oscillators
- spin valves
- spin waves
- microwave generation
- driven
- multilayers
- emission
Publication and Content Type
- ref (subject category)
- art (subject category)
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