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Observation of magnetic droplets in magnetic tunnel junctions
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- Shi, K. W. (author)
- Beihang Univ, Sch Integrated Circuit Sci & Engn, Fert Beijing Inst, MIIT Key Lab Spintron, Beijing 100191, Peoples R China.
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- Cai, W. L. (author)
- Beihang Univ, Sch Integrated Circuit Sci & Engn, Fert Beijing Inst, MIIT Key Lab Spintron, Beijing 100191, Peoples R China.
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- Sheng, Jiang (author)
- KTH,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Tillämpad fysik,Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden. ;Northwestern Polytech Univ, Sch Microelect, Xian 710072, Peoples R China.
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- Beihang Univ, Sch Integrated Circuit Sci & Engn, Fert Beijing Inst, MIIT Key Lab Spintron, Beijing 100191, Peoples R China Institutionen för fysik (GU) (creator_code:org_t)
- 2021-12-30
- 2022
- English.
- In: Science China-Physics Mechanics & Astronomy. - : Springer Science and Business Media LLC. - 1674-7348 .- 1869-1927. ; 65:2
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Magnetic droplets, a class of highly nonlinear magnetodynamic solitons, can be nucleated and stabilized in nanocontact spin-torque nano-oscillators. Here we experimentally demonstrate magnetic droplets in magnetic tunnel junctions (MTJs). The droplet nucleation is accompanied by power enhancement compared with its ferromagnetic resonance modes. The nucleation and stabilization of droplets are ascribed to the double-CoFeB free-layer structure in the all-perpendicular MTJ, which provides a low Zhang-Li torque and a high pinning field. Our results enable better electrical sensitivity in fundamental studies of droplets and show that the droplets can be utilized in MTJ-based applications and materials science.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- spin-torque nano-oscillators
- magnetic droplets
- spin dynamics
- magnetic
- tunnel junctions
- spin
- solitons
- driven
- Physics
- spin-torque nano-oscillators
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Shi, K. W.
- Cai, W. L.
- Sheng, Jiang
- Zhu, D. Q.
- Cao, K. H.
- Guo, Z. X.
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- Wei, J. Q.
- Du, A.
- Li, Z.
- Huang, Y.
- Yin, J. L.
- Åkerman, Johan, ...
- Zhao, W. S.
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