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Local dynamics of t...
Local dynamics of topological magnetic defects in the itinerant helimagnet FeGe.
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- Dussaux, A. (författare)
- Swiss Fed Inst Technol, Dept Phys, Otto Stern Weg 1, CH-8093 Zurich, Switzerland
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- Shoenherr, P (författare)
- Swiss Fed Inst Technol, Dept Mat, Vladimir Prelog Weg 4, CH-8093 Zurich, Switzerland
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- Koumpouras, Konstantinos (författare)
- Uppsala universitet,Materialteori
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- Chico, Jonathan (författare)
- Uppsala universitet,Materialteori
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- Chang, K (författare)
- Swiss Fed Inst Technol, Dept Phys, Otto Stern Weg 1, CH-8093 Zurich, Switzerland
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- Lorenzelli, L (författare)
- Swiss Fed Inst Technol, Dept Phys, Otto Stern Weg 1, CH-8093 Zurich, Switzerland
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- Kanazawa, N (författare)
- Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
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- Tokura, Y (författare)
- Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan.; RIKEN Ctr Emergent Matter Sci CEMS, Wako, Saitama 3510198, Japan
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- Garst, M (författare)
- Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany
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- Bergman, Anders (författare)
- Uppsala universitet,Materialteori
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- Degen, C.L. (författare)
- Swiss Fed Inst Technol, Dept Phys, Otto Stern Weg 1, CH-8093 Zurich, Switzerland
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- Meier, D. (författare)
- Swiss Fed Inst Technol, Dept Mat, Vladimir Prelog Weg 4, CH-8093 Zurich, Switzerland.; Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway
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(creator_code:org_t)
- 2016-08-18
- 2016
- Engelska.
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Ingår i: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 7
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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Abstract
Ämnesord
Stäng
- Chiral magnetic interactions induce complex spin textures including helical and conical spin spirals, as well as particle-like objects such as magnetic skyrmions and merons. These spin textures are the basis for innovative device paradigms and give rise to exotic topological phenomena, thus being of interest for both applied and fundamental sciences. Present key questions address the dynamics of the spin system and emergent topological defects. Here we analyse the micromagnetic dynamics in the helimagnetic phase of FeGe. By combining magnetic force microscopy, single-spin magnetometry and Landau-Lifschitz-Gilbert simulations we show that the nanoscale dynamics are governed by the depinning and subsequent motion of magnetic edge dislocations. The motion of these topologically stable objects triggers perturbations that can propagate over mesoscopic length scales. The observation of stochastic instabilities in the micromagnetic structure provides insight to the spatio-temporal dynamics of itinerant helimagnets and topological defects, and discloses open challenges regarding their technological usage.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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Dussaux, A.
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Shoenherr, P
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Koumpouras, Kons ...
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Chico, Jonathan
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Chang, K
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Lorenzelli, L
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visa fler...
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Kanazawa, N
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Tokura, Y
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Garst, M
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Bergman, Anders
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Degen, C.L.
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Meier, D.
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visa färre...
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