Curvature-induced changes in the magnetic energy of vortices and skyrmions in paraboloidal nanoparticles
arXiv:1411.2501 · doi:10.1063/1.4918565
Abstract
Curvature effects are important for a proper description of the properties of magnetic systems. In this paper the exchange and dipolar energy of vortices on a paraboloidal shell is studied. Using analytical calculations it is shown that the in-plane component of vortices has larger energy on a paraboloidal shell than in a planar disk with same thickness. On the other hand, the dipolar energy associated to the vortex core diminishes if the vortex core is on a paraboloidal surface. This reduction in the dipolar energy may cause a vortex pinning mechanism by a paraboloidal shaped defect in a planar nanomagnet. Regarding skyrmions, by using an in-plane anisotropy approximation to the dipolar energy, it is shown that the skyrmion must have its width shrunk in order to diminishes the magnetostatic energy and satisfy geometrical constraints of the system.
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- Curvature-induced changes in the magnetic energy of vortices and skyrmions in paraboloidal nanoparticles
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Cited by in corpus (9)
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- Vortex-antivortex pairs induced by curvature in toroidal nanomagnets
- Magnetization ground state and reversal modes of magnetic nanotori
- Stability of skyrmions on curved surfaces in the presence of a magnetic field
- Analysis on the stability of in-surface magnetic configurations in toroidal nanoshells
- Coupling of skyrmions mediated by RKKY interaction
- Curvature-induced changes in the magnetic energy of vortices and skyrmions in paraboloidal nanoparticles
- Manipulating the shape of flexible magnetoelastic nanodiscs with meron-like magnetic states
- Berry phases and zero-modes in toroidal topological insulator