Loading…

Field-driven domain wall motion under a bias current in the creep and flow regimes in Pt/[CoSiB/Pt]N nanowires

The dynamics of magnetic domain wall (DW) in perpendicular magnetic anisotropy Pt/[CoSiB/Pt] N nanowires was studied by measuring the DW velocity under a magnetic field ( H ) and an electric current ( J ) in two extreme regimes of DW creep and flow. Two important findings are addressed. One is that...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2016-03, Vol.6 (1), p.23933-23933, Article 23933
Main Authors: Choi, Y. H., Yoshimura, Y., Kim, K.-J., Lee, K., Kim, T. W., Ono, T., You, C.-Y., Jung, M. H.
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The dynamics of magnetic domain wall (DW) in perpendicular magnetic anisotropy Pt/[CoSiB/Pt] N nanowires was studied by measuring the DW velocity under a magnetic field ( H ) and an electric current ( J ) in two extreme regimes of DW creep and flow. Two important findings are addressed. One is that the field-driven DW velocity increases with increasing N in the flow regime, whereas the trend is inverted in the creep regime. The other is that the sign of spin current-induced effective field is gradually reversed with increasing N in both DW creep and flow regimes. To reveal the underlying mechanism of new findings, we performed further experiment and micromagnetic simulation, from which we found that the observed phenomena can be explained by the combined effect of the DW anisotropy, Dzyaloshinskii-Moriya interaction, spin-Hall effect, and spin-transfer torques. Our results shed light on the mechanism of DW dynamics in novel amorphous PMA nanowires, so that this work may open a path to utilize the amorphous PMA in emerging DW-based spintronic devices.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep23933