Real-space and pulse-by-pulse analysis of domain wall creep induced by spin-Hall torque

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This study aims to investigate the creep motion of a magnetic domain wall (DW) induced by spin-Hall torque (SHT) in a Ta/Co-Ni/Pt heterostructured thin wire using photoemission electron microscopy. The displacement of the DW was recorded every time after the duration of an electric current pulse. Results revealed that the existence of pinning centers and the inhomogeneity of the thermal diffusion property of the wire may result in an unstable DW motion. On the contrary, this data also suggested that the SHT induced from both the Ta and Pt layers can significantly improve the DW velocity, which was found to be three orders of magnitude larger than that previously reported for the MgO/Co-Ni/Pt system (Taniguchi et al., Appl. Phys. Exp. 7, 053005 (2014)). (C) 2019 The Japan Society of Applied Physics
Publisher
IOP PUBLISHING LTD
Issue Date
2019-02
Language
English
Article Type
Article
Citation

JAPANESE JOURNAL OF APPLIED PHYSICS, v.58, no.2, pp.023001

ISSN
0021-4922
DOI
10.7567/1347-4065/aaf628
URI
http://hdl.handle.net/10203/250190
Appears in Collection
PH-Journal Papers(저널논문)
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