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Tuning exchange-dom...
Tuning exchange-dominated spin-waves using lateral current spread in nanocontact spin-torque nano-oscillators
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Fazlali, Masoumeh (författare)
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- Banuazizi, Seyed Amir Hossein (författare)
- KTH,Material- och nanofysik
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Ahlberg, Martina (författare)
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visa fler...
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Dvornik, Mykola (författare)
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R. Sani, Sohrab (författare)
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Mohseni, Seyed Majid (författare)
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Åkerman, Johan (författare)
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visa färre...
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(creator_code:org_t)
- 2018
- 2018
- Engelska.
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Ingår i: Applied Physics Letters. - 0003-6951 .- 1077-3118.
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- We present an efficient method to tailor propagating spin waves in quasi-confined systems. We use nanocontact spin-torque nano-oscillators based on NiFe/Cu/Co spin-valves and study the ferromagnetic and spin-wave resonances (FMR and SWR) of both layers. We employ homodyne-detected ferromagnetic resonance spectroscopy, resembling spin-torque FMR, to detect the magnetodynamics. The external field is applied in-plane, giving a parallel configuration of the magnetic layers, which do not provide any spin-transfer torque. Instead, the excitation is caused by the Oersted-field. By varying the thickness of the bottom Cu electrode of the devices, we tune the current distribution in the samples, and thereby the Oersted field, which governs the spin wave characteristics.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
Nyckelord
- spin wave
- nanocontact
- spin torque nano-oscillator
- Fysik
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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