- Skyrmion morphology in ultrathin magnetic films doi link

Auteur(s): Gross I., Akhtar M. W., Hrabec A., Sampaio J., Martinez L. j., Chouaieb S., Shields B. j., Maletinsky P., Thiaville A., Rohart S., Jacques V.(Corresp.)

(Article) Publié: Physical Review Materials, vol. 2 p.024406 (2018)
Texte intégral en Openaccess : arxiv

Ref HAL: hal-01781380_v1
DOI: 10.1103/PhysRevMaterials.2.024406
WoS: WOS:000426041400004
Exporter : BibTex | endNote
19 Citations

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. The skyrmion size and shape are found to be strongly affected by local pinning effects and magnetic field history. Micromagnetic simulations including a static disorder, based on the 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.