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Freezing and thawin...
Freezing and thawing magnetic droplet solitons
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- Ahlberg, Martina (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.
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- Chung, Sunjae, 1976 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.;Korea Natl Univ Educ, Dept Phys Educ, Cheongju 28173, South Korea.
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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
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- Frisk, Andreas (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.
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- Khademi, M. (author)
- Shahid Beheshti Univ, Dept Phys, Tehran 1983969411, Iran.
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- Khymyn, Roman (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.
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- Awad, Ahmad (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden.
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- Le, Quang Tuan, 1976- (author)
- KTH,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Tillämpad fysik,Univ Gothenburg, Dept Phys
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- Mazraati, Hamid, Industrial PhD Student, 1989- (author)
- KTH,Material- och nanofysik,NanOsc AB, S-16440 Kista, Sweden.
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- Mohseni, Majid (author)
- KTH,Tillämpad fysik,Shahid Beheshti Univ, Dept Phys, Tehran 1983969411, Iran.
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- Weigand, M. (author)
- Max Planck Inst Intelligent Syst, Stuttgart, Germany.
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- Bykova, I. (author)
- Max Planck Inst Intelligent Syst, Stuttgart, Germany.
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- Gross, F. (author)
- Max Planck Inst Intelligent Syst, Stuttgart, Germany.
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- Goering, E. (author)
- Max Planck Inst Intelligent Syst, Stuttgart, Germany.
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- Schutz, G. (author)
- Max Planck Inst Intelligent Syst, Stuttgart, Germany.
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- Grafe, J. (author)
- Max Planck Inst Intelligent Syst, Stuttgart, Germany.
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- Åkerman, Johan, 1970 (author)
- KTH,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Tillämpad fysik,Univ Gothenburg, Dept Phys
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(creator_code:org_t)
- 2022-05-05
- 2022
- English.
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In: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 13:1
- Related links:
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https://doi.org/10.1...
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
Close
- Magnetic droplets are a type of non-topological magnetic soliton, which are stabilised and sustained by spin-transfer torques for instance. Without this, they would collapse. Here Ahlberg et al show that by decreasing the applied magnetic field, droplets can be frozen, forming a static nanobubble Magnetic droplets are non-topological magnetodynamical solitons displaying a wide range of complex dynamic phenomena with potential for microwave signal generation. Bubbles, on the other hand, are internally static cylindrical magnetic domains, stabilized by external fields and magnetostatic interactions. In its original theory, the droplet was described as an imminently collapsing bubble stabilized by spin transfer torque and, in its zero-frequency limit, as equivalent to a bubble. Without nanoscale lateral confinement, pinning, or an external applied field, such a nanobubble is unstable, and should collapse. Here, we show that we can freeze dynamic droplets into static nanobubbles by decreasing the magnetic field. While the bubble has virtually the same resistance as the droplet, all signs of low-frequency microwave noise disappear. The transition is fully reversible and the bubble can be thawed back into a droplet if the magnetic field is increased under current. Whereas the droplet collapses without a sustaining current, the bubble is highly stable and remains intact for days without external drive. Electrical measurements are complemented by direct observation using scanning transmission x-ray microscopy, which corroborates the analysis and confirms that the bubble is stabilized by pinning.
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
- dynamics
- Science & Technology - Other Topics
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ahlberg, Martina
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Chung, Sunjae, 1 ...
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Sheng, Jiang
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Frisk, Andreas
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Khademi, M.
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Khymyn, Roman
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Awad, Ahmad
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Le, Quang Tuan, ...
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Mazraati, Hamid, ...
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Mohseni, Majid
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Weigand, M.
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Bykova, I.
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Gross, F.
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Goering, E.
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Schutz, G.
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Grafe, J.
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Åkerman, Johan, ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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Nature Communica ...
- By the university
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University of Gothenburg
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Royal Institute of Technology