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Tunable intrinsic p...
Tunable intrinsic phase of a spin torque oscillator
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- Zhou, Yan (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
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- Persson, Johan (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
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- Bonetti, Stefano (author)
- KTH,Materialfysik
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- Åkerman, Johan (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
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(creator_code:org_t)
- AIP Publishing, 2008
- 2008
- English.
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In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 92:9, s. 092505-
- 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
Close
- We show analytically why a spin torque oscillator (STO) locks to an alternating current (I-ac), having the same frequency as the STO, at a nontrivial, intrinsic, phase value Delta phi(0). We determine both the stability and the exact phase of the locked state and explain the recently observed phase jump by about 180 degrees at the in-plane-to-out-of-plane precession boundary. Delta phi(0) depends on the STO material parameters and is tunable through both the applied field and the dc current, which provides an additional control of the exact I-V phase in an STO driven radio frequency circuit.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- magnetic tunnel-junctions
- co/cu/co pillars
- nanopillars
- reversal
- locking
- Magnetism
- Magnetism
Publication and Content Type
- ref (subject category)
- art (subject category)
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