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Generation of single skyrmions by picosecond magnetic field pulses
Norwegian Univ Sci & Technol, Dept Phys, Ctr Quantum Spintron, NO-7491 Trondheim, Norway..
Norwegian Univ Sci & Technol, Dept Phys, Ctr Quantum Spintron, NO-7491 Trondheim, Norway..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory. Forschungszentrum Julich, Peter Grunberg Inst, D-52425 Julich, Germany.;Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany.;JARA, D-52425 Julich, Germany.
Radboud Univ Nijmegen, Inst Mol & Mat, Heyendaalseweg 135, NL-6525 AJ Nijmegen, Netherlands..
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2017 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 96, no 14, article id 140411Article in journal (Refereed) Published
Abstract [en]

We numerically demonstrate an ultrafastmethod to create single skyrmions in a collinear ferromagnetic sample by applying a picosecond (effective) magnetic field pulse in the presence of Dzyaloshinskii-Moriya interaction. For small samples the applied magnetic field pulse could be either spatially uniform or nonuniform while for large samples a nonuniform and localized field is more effective. We examine the phase diagram of pulse width and amplitude for the nucleation. Our finding could ultimately be used to design future skyrmion-based devices.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2017. Vol. 96, no 14, article id 140411
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-340714DOI: 10.1103/PhysRevB.96.140411ISI: 000413699600002OAI: oai:DiVA.org:uu-340714DiVA, id: diva2:1179940
Funder
EU, FP7, Seventh Framework Programme, FP7-NMP-2011-SMALL-281043EU, European Research Council, 339813Available from: 2018-02-02 Created: 2018-02-02 Last updated: 2018-02-02Bibliographically approved

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Nandy, Ashis K.

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