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Do Images of Biskyrmions Show Type-II Bubbles?
Loudon, James C; Twitchett-Harrison, Alison C; Cortés-Ortuño, David; Birch, Max T; Turnbull, Luke A; Stefancic, Ales; Ogrin, Feodor Y; Burgos-Parra, Erick O; Bukin, Nicholas; Laurenson, Angus; Popescu, Horia; Beg, Marijan; Hovorka, Ondrej; Fangohr, Hans; Midgley, Paul A; Balakrishnan, Geetha; Hatton, Peter D.
Afiliación
  • Loudon JC; Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK.
  • Twitchett-Harrison AC; Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK.
  • Cortés-Ortuño D; Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK.
  • Birch MT; Department of Physics, University of Durham, Durham, DH1 3LE, UK.
  • Turnbull LA; Department of Physics, University of Durham, Durham, DH1 3LE, UK.
  • Stefancic A; Department of Physics, University of Warwick, Coventry, CV4 7AL, UK.
  • Ogrin FY; School of Physics and Astronomy, University of Exeter, Exeter, EX4 4QL, UK.
  • Burgos-Parra EO; School of Physics and Astronomy, University of Exeter, Exeter, EX4 4QL, UK.
  • Bukin N; School of Physics and Astronomy, University of Exeter, Exeter, EX4 4QL, UK.
  • Laurenson A; School of Physics and Astronomy, University of Exeter, Exeter, EX4 4QL, UK.
  • Popescu H; Synchrotron SOLEIL, Saint Aubin, BP 48, 91192, Gif-sur-Yvette, France.
  • Beg M; Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK.
  • Hovorka O; European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany.
  • Fangohr H; Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK.
  • Midgley PA; Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK.
  • Balakrishnan G; European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany.
  • Hatton PD; Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK.
Adv Mater ; 31(16): e1806598, 2019 Apr.
Article en En | MEDLINE | ID: mdl-30844122
The intense research effort investigating magnetic skyrmions and their applications for spintronics has yielded reports of more exotic objects including the biskyrmion, which consists of a bound pair of counter-rotating vortices of magnetization. Biskyrmions have been identified only from transmission electron microscopy images and have not been observed by other techniques, nor seen in simulations carried out under realistic conditions. Here, quantitative Lorentz transmission electron microscopy, X-ray holography, and micromagnetic simulations are combined to search for biskyrmions in MnNiGa, a material in which they have been reported. Only type-I and type-II magnetic bubbles are found and images purported to show biskyrmions can be explained as type-II bubbles viewed at an angle to their axes. It is not the magnetization but the magnetic flux density resulting from this object that forms the counter-rotating vortices.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2019 Tipo del documento: Article Pais de publicación: Alemania

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2019 Tipo del documento: Article Pais de publicación: Alemania