The evolution of skyrmions in Ir/Fe/Co/Pt multilayers and their topological Hall signature

M. Raju, A. Yagil, Anjan Soumyanarayanan, Anthony K. C. Tan, A. Almoalem, Fusheng Ma, O. M. Auslaender () and C. Panagopoulos ()
Additional contact information
M. Raju: Nanyang Technological University
A. Yagil: Technion
Anjan Soumyanarayanan: Agency for Science, Technology and Research (A*STAR)
Anthony K. C. Tan: Agency for Science, Technology and Research (A*STAR)
A. Almoalem: Technion
Fusheng Ma: Nanyang Technological University
O. M. Auslaender: Technion
C. Panagopoulos: Nanyang Technological University

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract The topological Hall effect (THE) is the Hall response to an emergent magnetic field, a manifestation of the skyrmion Berry-phase. As the magnitude of THE in magnetic multilayers is an open question, it is imperative to develop comprehensive understanding of skyrmions and other chiral textures, and their electrical fingerprint. Here, using Hall-transport and magnetic-imaging in a technologically viable multilayer film, we show that topological-Hall resistivity scales with the isolated-skyrmion density over a wide range of temperature and magnetic-field, confirming the impact of the skyrmion Berry-phase on electronic transport. While we establish qualitative agreement between the topological-Hall resistivity and the topological-charge density, our quantitative analysis shows much larger topological-Hall resistivity than the prevailing theory predicts for the observed skyrmion density. Our results are fundamental for the skyrmion-THE in multilayers, where interfacial interactions, multiband transport and non-adiabatic effects play an important role, and for skyrmion applications relying on THE.

Date: 2019
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-018-08041-9 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-018-08041-9

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-018-08041-9

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().