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Fletta eftir efnisorði "Skyrmions"

Fletta eftir efnisorði "Skyrmions"

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    Atomistic spin simulations of electric-field-assisted nucleation and annihilation of magnetic skyrmions in Pd/Fe/Ir(111) 
    Goerzen, Moritz Alexander; von Malottki, Stephan; Kwiatkowski, Grzegorz; Bessarab, Pavel; Heinze, Stefan (American Physical Society (APS), 2022-06-27)
    We provide a theoretical background for electric-field-assisted thermally activated writing and deleting of magnetic skyrmions in ultrathin transition-metal films. We apply an atomistic spin model, which includes the exchange interaction, the ...
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    Comment on “Path to collapse for an isolated Néel skyrmion” 
    Bessarab, Pavel (American Physical Society (APS), 2017-04-24)
    Rohart et al. [Phys. Rev. B 93, 214412 (2016)] recently reported calculations indicating two mechanisms for the annihilation of a skyrmion in a Co monolayer on Pt(111). The path calculations were based on a method presented in the Supplemental Material ...
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    Duplication, Collapse, and Escape of Magnetic Skyrmions Revealed Using a Systematic Saddle Point Search Method 
    Müller, Gideon Philipp; Bessarab, Pavel; Vlasov, Sergei M.; Lux, Fabian; Kiselev, Nikolai S.; Blügel, Stefan; Uzdin, Valery M.; Jónsson, Hannes (American Physical Society (APS), 2018-11-06)
    Various transitions that a magnetic Skyrmion can undergo are found in calculations using a method for climbing up the energy surface and converging onto first order saddle points. In addition to collapse and escape through a boundary, the method ...
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    Energy surface and lifetime of magnetic skyrmions 
    Uzdin, V.M.; Potkina, M.N.; Lobanov, I.S.; Bessarab, Pavel; Jónsson, Hannes (Elsevier BV, 2017-11)
    The stability of skyrmions in various environments is estimated by analyzing the multidimensional surface describing the energy of the system as a function of the directions of the magnetic moments in the system. The energy is given by a Heisenberg-like ...
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    First-principles prediction of sub-10-nm skyrmions in Pd/Fe bilayers on Rh(111) 
    Haldar, Soumyajyoti; von Malottki, Stephan; Meyer, Sebastian; Bessarab, Pavel; Heinze, Stefan (American Physical Society (APS), 2018-08-27)
    We show that stable skyrmions with diameters of a few nanometers can emerge in atomic Pd/Fe bilayers on the Rh(111) surface. Based on density functional theory we calculate the exchange and the Dzyaloshinskii-Moriya interaction as well as the ...
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    Stability and lifetime of antiferromagnetic skyrmions 
    Bessarab, Pavel; Yudin, D.; Gulevich, D. R.; Wadley, P.; Titov, M.; Tretiakov, Oleg A. (American Physical Society (APS), 2019-04-26)
    The two-dimensional Heisenberg exchange model with out-of-plane anisotropy and a Dzyaloshinskii-Moriya interaction is employed to investigate the lifetime and stability of antiferromagnetic (AFM) skyrmion as a function of temperature and external ...
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    Thermal generation of droplet soliton in chiral magnet 
    Kuchkin, Vladyslav; Bessarab, Pavel; Kiselev, Nikolai S. (American Physical Society (APS), 2022-05-02)
    Controlled creation of localized magnetic textures beyond conventional π-skyrmions is an important problem in the field of magnetism. Here, by means of spin dynamics simulations, Monte Carlo simulations, and harmonic transition state theory we demonstrate ...