Selective activation of an isolated magnetic skyrmion in a ferromagnet with microwave electric fields

Akihito Takeuchi, Masahito Mochizuki

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    We theoretically reveal that pure eigenmodes of an isolated magnetic skyrmion embedded in a ferromagnetic environment can be selectively activated using microwave electric fields without exciting gigantic ferromagnetic resonances, in contrast to conventional methods using microwave magnetic fields. We also demonstrate that this selective activation of a skyrmion can efficiently drive its translational motion in a ferromagnetic nanotrack under application of an external magnetic field inclined from the normal direction. We find that a mode with combined breathing and rotational oscillations induces much faster skyrmion propagation than the breathing mode studied in a previous work [Wang et al., Phys. Rev. B 92, 020403(R) (2015)].

    Original languageEnglish
    Article number072404
    JournalApplied Physics Letters
    Volume113
    Issue number7
    DOIs
    Publication statusPublished - 2018 Aug 13

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    breathing
    activation
    microwaves
    translational motion
    electric fields
    ferromagnetic resonance
    magnetic fields
    oscillations
    propagation

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Selective activation of an isolated magnetic skyrmion in a ferromagnet with microwave electric fields. / Takeuchi, Akihito; Mochizuki, Masahito.

    In: Applied Physics Letters, Vol. 113, No. 7, 072404, 13.08.2018.

    Research output: Contribution to journalArticle

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    AB - We theoretically reveal that pure eigenmodes of an isolated magnetic skyrmion embedded in a ferromagnetic environment can be selectively activated using microwave electric fields without exciting gigantic ferromagnetic resonances, in contrast to conventional methods using microwave magnetic fields. We also demonstrate that this selective activation of a skyrmion can efficiently drive its translational motion in a ferromagnetic nanotrack under application of an external magnetic field inclined from the normal direction. We find that a mode with combined breathing and rotational oscillations induces much faster skyrmion propagation than the breathing mode studied in a previous work [Wang et al., Phys. Rev. B 92, 020403(R) (2015)].

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