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Chiral magnetoresistance in Pt/Co/Pt zigzag wires

Title
Chiral magnetoresistance in Pt/Co/Pt zigzag wires
Authors
Yin, YuxiangHan, Dong SooKim, June SeoLavrijsen, ReinoudLee, Kyung JinLee, Seo WonKim, Kyoung WhanLee, Hyun WooSwagten, Henk J. M.Koopmans, Bert
DGIST Authors
Kim, June Seo
Issue Date
2017-03
Citation
Applied Physics Letters, 110(12)
Type
Article
Article Type
Article
Keywords
MAGNETIC DOMAIN-WALLS2D ELECTRON-GASEXCHANGEDYNAMICSMOTIONFILMS
ISSN
0003-6951
Abstract
The Rashba effect leads to a chiral precession of the spins of moving electrons, while the Dzyaloshinskii-Moriya interaction (DMI) generates preference towards a chiral profile of local spins. We predict that the exchange interaction between these two spin systems results in a "chiral" magnetoresistance depending on the chirality of the local spin texture. We observe this magnetoresistance by measuring the domain wall (DW) resistance in a uniquely designed Pt/Co/Pt zigzag wire and by changing the chirality of the DW with applying an in-plane magnetic field. A chirality-dependent DW resistance is found, and a quantitative analysis shows a good agreement with a theory based on the Rashba model. Moreover, the DW resistance measurement allows us to independently determine the strength of the Rashba effect and the DMI simultaneously, and the result implies a possible correlation between the Rashba effect, the DMI, and the symmetric Heisenberg exchange. Published by AIP Publishing.
URI
http://hdl.handle.net/20.500.11750/5655
DOI
10.1063/1.4979031
Publisher
AMER INST PHYSICS
Related Researcher
Files:
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Collection:
ETC1. Journal Articles


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