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Article overview
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Multiple vortex-antivortex pairs generation in magnetic nanodots | Yuri Gaididei
; Volodymyr P. Kravchuk
; Denis D. Sheka
; Franz G. Mertens
; | Date: |
27 Nov 2009 | Abstract: | An interaction of a magnetic vortex with a rotating magnetic field causes the
nucleation of the vortex--antivortex pair leading to the vortex polarity
switching. The key point of this process is a creation of a dip, which can be
interpreted as a nonlinear resonance in the system of the certain magnon modes
with nonlinear coupling. The usually observed single-dip structure is a
particular case of a multidip structure. Dynamics of the structure with $n$
dips is described as a dynamics of nonlinearly coupled modes with azimuthal
numbers $m=0,pm n,pm 2n$. The multidip structure with arbitrary number of
vortex-antivortex pairs can be obtained in vortex-state nanodisk using a space-
and time-varying magnetic field. A scheme of possible experimental setup for
multidip structures generation is proposed. | Source: | arXiv, 0911.5353 | Services: | Forum | Review | PDF | Favorites |
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