Skyrmion morphology in ultrathin magnetic films
POSTER
Abstract
Nitrogen-vacancy magnetic microscopy is employed in quenching mode as a non-invasive, high resolution tool to investigate the morphology of isolated skyrmions in ultrathin magnetic films [1]. The skyrmion size and shape are found to be strongly affected by local pinning effects and magnetic field history. Micromagnetic simulations including static disorder, based on a physical model of grain-to-grain thickness variations, reproduce all experimental observations and reveal the key role of disorder and magnetic history in the stabilization of skyrmions in ultrathin magnetic films. This work opens the way to an in-depth understanding of skyrmion dynamics in real, disordered media. [1] I. Gross et al. arXiv:1709.06027 (2017).
*This research has been supported by the European Research Council (ERC-StG-2014,Imagine) and
by the French Agence Nationale de la Recherche (ANR-14-CE26-0012,Ultrasky).
Presenters
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Mohammad Akhtar
- Laboratoire Charles Coulomb, Université de Montpellier,CNRS
- Laboratoire Charles Coulomb, Université de Montpellier, CNRS