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Control of thermal budget in nanocontact spin-torque nano-oscillators
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- Banuazizi, Seyed Amir Hossein (author)
- KTH,Material- och nanofysik
- Mohseni, Seyed Majid (author)
- R. Sani, Sohrab (author)
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- Eklund, Anders (author)
- A. M. Naiini, Maziar (author)
- Malm, B. Gunnar (author)
- Åkerman, Johan (author)
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- (creator_code:org_t)
- English.
- Other publication (other academic/artistic)
Abstract
Subject headings
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- We investigate the influence of the bottom Cu electrode thickness (tCu) in nanocontact spin-torque nano-oscillators (NC-STNOs) based on Si/SiO2/Pd(8)/Cu(tCu)/Co(8)/Cu(7)/NiFe(4.5)/Cu(3)/Pd(3) GMR stacks on the thermal budget of the magnetodynamically active region. Increasing tCu from 10 to 70 nm results in a ~50% reduction in Joule heating in both the Co and NiFe layers, which directly improves the microwave output stability and linewidth. Numerical simulations of the NC-STNO current distribution suggest that this improvement originates from a strongly reduced lateral current spread in the top ferromagnetic layer and a reduction in the device's resistance.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- nanocontact
- spin torque nano-oscillator
- Joule heating
- Physics
- Fysik
Publication and Content Type
- vet (subject category)
- ovr (subject category)
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