Static and dynamic properties of vortex pairs in asymmetric nanomagnets

B. C. Koop; M. Gruschke; T. Descamps; A. Bondarenko; B. A. Ivanov; V. Korenivski

doi:10.1063/1.4944515

Static and dynamic properties of vortex pairs in asymmetric nanomagnets

Mesoscale and Nanoscale Physics 2016-04-06 v1

Authors: B. C. Koop , M. Gruschke , T. Descamps , A. Bondarenko , B. A. Ivanov , V. Korenivski

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Abstract

Stacked spin-vortex pairs in magnetic multilayered nanopillars, with vertical separation between the vortices small compared to the vortex core size, exhibit spin dynamics absent in individual vortices. This dynamics is nonlinear and is due to the strong direct core-core coupling in the system, dominating energetically for small- signal excitation. We observe and explain the appearance of spin resonance modes, forbidden within linear dynamics, and discuss how they depend on the magnetic and morphological asymmetries in the samples.

Keywords

spin vortex pairs nanomagnets nonlinear spin dynamics core-core coupling spin resonance modes magnetic asymmetry morphological asymmetry

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@article{arxiv.1511.03092,
  title  = {Static and dynamic properties of vortex pairs in asymmetric nanomagnets},
  author = {B. C. Koop and M. Gruschke and T. Descamps and A. Bondarenko and B. A. Ivanov and V. Korenivski},
  journal= {arXiv preprint arXiv:1511.03092},
  year   = {2016}
}

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5 pages, 3 figures

Static and dynamic properties of vortex pairs in asymmetric nanomagnets

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