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Field-Free High-Fre...
Field-Free High-Frequency Exchange-Spring Spin-Torque Nano- Oscillators
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- Jiang, Sheng (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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- Chung, Sunjae (författare)
- Korea Natl Univ Educ, Dept Phys Educ, Cheongju 28173, South Korea.
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- Le, Quang Tuan (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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- Wong, Ping Kwan Johnny (författare)
- Northwestern Polytech Univ, Sch Microelect, Xian 710072, Peoples R China.
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- Zhang, Wen (författare)
- Northwestern Polytech Univ, Sch Microelect, Xian 710072, Peoples R China.
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- Åkerman, Johan (författare)
- Gothenburg University,Göteborgs universitet,KTH,Material- och nanofysik,Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.;KTH Royal Inst Technol, Sch Engn Sci, S-10044 Stockholm, Sweden.;NanOsc AB, S-16440 Kista, Sweden.,Institutionen för fysik (GU),Department of Physics (GU)
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(creator_code:org_t)
- 2023-02-07
- 2023
- Engelska.
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Ingår i: Nano Letters. - : American Chemical Society (ACS). - 1530-6984 .- 1530-6992. ; 23:4, s. 1159-1166
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://gup.ub.gu.se...
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Abstract
Ämnesord
Stäng
- Spin-torque nano-oscillators (STNOs) are a type of nanoscale microwave auto-oscillators utilizing spin-torque to generate magnetodynamics with great promise for applications in microwaves, magnetic memory, and neuromorphic computing. Here, we report the first demonstration of exchange-spring STNOs, with an exchange-spring ([Co/Pd]-Co) reference layer and a perpendicular ([Co/Ni]) free layer. This magnetic configuration results in high-frequency (>10 GHz) microwave emission at a zero magnetic field and exchange-spring dynamics in the reference layer and the observation of magnetic droplet solitons in the free layer at different current polarities. Our demonstration of bipolar and field-free exchange-spring-based STNOs operating over a 20 GHz frequency range greatly extends the design freedom and functionality of the current STNO technology for energy -efficient high-frequency spintronic and neuromorphic applications.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Exchange-spring magnet
- Spin-torque nano-oscillators
- Magnetic droplet
- Field-free auto-oscillation
- Exchange-spring magnet
- Spin-torque nano-oscillators
- Magnetic droplet
- Field-free auto-oscillation
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- art (ämneskategori)
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