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    Skyrmion clusters from Bloch lines in ferromagnetic films

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    1706.02994v2.pdf
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    Type
    Article
    Authors
    Garanin, Dmitry A.
    Chudnovsky, Eugene M.
    Zhang, Xixiang cc
    KAUST Department
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    OSR-2016-CRG5-2977
    Date
    2017-12-29
    Preprint Posting Date
    2017-06-09
    Online Publication Date
    2017-12-29
    Print Publication Date
    2017-10-01
    Permanent link to this record
    http://hdl.handle.net/10754/626743
    
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    Abstract
    Conditions under which various skyrmion objects emerge in experiments on thin magnetic films remain largely unexplained. We investigate numerically centrosymmetric spin lattices in films of finite thickness with ferromagnetic exchange, magnetic anisotropy, and dipole-dipole interaction. Evolution of labyrinth domains into compact topological structures on application of the magnetic field is found to be governed by the configuration of Bloch lines inside domain walls. Depending on the combination of Bloch lines, the magnetic domains evolve into individual skyrmions, biskyrmions, or more complex topological objects. While the geometry of such objects is sensitive to the parameters, their topological charge is uniquely determined by the topological charge of Bloch lines inside the magnetic domain from which the object emerges.
    Citation
    Garanin DA, Chudnovsky EM, Zhang X (2017) Skyrmion clusters from Bloch lines in ferromagnetic films. EPL (Europhysics Letters) 120: 17005. Available: http://dx.doi.org/10.1209/0295-5075/120/17005.
    Sponsors
    This work has been supported by the grant No. OSR-2016-CRG5-2977 from King Abdullah University of Science and Technology
    Publisher
    IOP Publishing
    Journal
    EPL (Europhysics Letters)
    DOI
    10.1209/0295-5075/120/17005
    arXiv
    1706.02994
    Additional Links
    http://iopscience.iop.org/article/10.1209/0295-5075/120/17005/meta
    ae974a485f413a2113503eed53cd6c53
    10.1209/0295-5075/120/17005
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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