Effect of Chiral Damping on the dynamics of chiral domain walls and skyrmions

C. K. Safeer, Mohamed-Ali Nsibi, Jayshankar Nath, Mihai Sebastian Gabor, Haozhe Yang, Isabelle Joumard, Stephane Auffret, Gilles Gaudin and Ioan-Mihai Miron ()
Additional contact information
C. K. Safeer: Univ. Grenoble Alpes CNRS, CEA, Grenoble INP, SPINTEC
Mohamed-Ali Nsibi: Univ. Grenoble Alpes CNRS, CEA, Grenoble INP, SPINTEC
Jayshankar Nath: Univ. Grenoble Alpes CNRS, CEA, Grenoble INP, SPINTEC
Mihai Sebastian Gabor: Technical University of Cluj-Napoca
Haozhe Yang: Univ. Grenoble Alpes CNRS, CEA, Grenoble INP, SPINTEC
Isabelle Joumard: Univ. Grenoble Alpes CNRS, CEA, Grenoble INP, SPINTEC
Stephane Auffret: Univ. Grenoble Alpes CNRS, CEA, Grenoble INP, SPINTEC
Gilles Gaudin: Univ. Grenoble Alpes CNRS, CEA, Grenoble INP, SPINTEC
Ioan-Mihai Miron: Univ. Grenoble Alpes CNRS, CEA, Grenoble INP, SPINTEC

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract Friction plays an essential role in most physical processes that we experience in our everyday life. Examples range from our ability to walk or swim, to setting boundaries of speed and fuel efficiency of moving vehicles. In magnetic systems, the displacement of chiral domain walls (DW) and skyrmions (SK) by Spin Orbit Torques (SOT), is also prone to friction. Chiral damping (αc), the dissipative counterpart of the Dzyaloshinskii Moriya Interaction (DMI), plays a central role in these dynamics. Despite experimental observation, and numerous theoretical studies confirming its existence, the influence of chiral damping on DW and SK dynamics has remained elusive due to the difficulty of discriminating from DMI. Here we unveil the effect that αc has on the flow motion of DWs and SKs driven by current and magnetic field. We use a static in-plane field to lift the chiral degeneracy. As the in-plane field is increased, the chiral asymmetry changes sign. When considered separately, neither DMI nor αc can explain the sign reversal of the asymmetry, which we prove to be the result of their competing effects. Finally, numerical modelling unveils the non-linear nature of chiral dissipation and its critical role for the stabilization of moving SKs.

Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-022-28815-6 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:13:y:2022:i:1:d:10.1038_s41467-022-28815-6

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

DOI: 10.1038/s41467-022-28815-6

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 ().