Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect

André Bisig, Collins Ashu Akosa, Jung Hwan Moon, Jan Rhensius, Christoforos Moutafis, Arndt Von Bieren, Jakoba Heidler, Gillian Kiliani, Matthias Kammerer, Michael Curcic, Markus Weigand, Tolek Tyliszczak, Bartel Van Waeyenberge, Hermann Stoll, Gisela Schütz, Kyoung Jin Lee, Aurelien Manchon, Mathias Kläui

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We present a combined theoretical and experimental study, investigating the origin of the enhanced nonadiabaticity of magnetic vortex cores. Scanning transmission x-ray microscopy is used to image the vortex core gyration dynamically to measure the nonadiabaticity with high precision, including a high confidence upper bound. We show theoretically, that the large nonadiabaticity parameter observed experimentally can be explained by the presence of local spin currents arising from a texture induced emergent Hall effect. This study demonstrates that the magnetic damping α and nonadiabaticity parameter β are very sensitive to the topology of the magnetic textures, resulting in an enhanced ratio (β/α>1) in magnetic vortex cores or Skyrmions.

Original languageEnglish
Article number277203
JournalPhysical Review Letters
Volume117
Issue number27
DOIs
Publication statusPublished - 2016 Dec 30

    Fingerprint

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Bisig, A., Akosa, C. A., Moon, J. H., Rhensius, J., Moutafis, C., Von Bieren, A., ... Kläui, M. (2016). Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect. Physical Review Letters, 117(27), [277203]. https://doi.org/10.1103/PhysRevLett.117.277203