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Intrinsic asymmetry in chiral domain walls due to the Dzyaloshinskii-Moriya interaction

Cited 30 time in Web of Science Cited 31 time in Scopus
Authors

Kim, Dae-Yun; Kim, Duck-Ho; Choe, Sug-Bong

Issue Date
2016-05
Publisher
Japan Soc of Applied Physics
Citation
Applied Physics Express, Vol.9 No.5, p. 053001
Abstract
We present an analytical description of the energy density of chiral magnetic domain walls (DWs) that considers variations in DW width. Surprisingly, under the application of a longitudinal in-plane magnetic field, the DW width varies abnormally, resulting in an asymmetric variation of the DW energy density. Such asymmetry is attributable to the nonlinear contribution to the effective magnetic field from the Dzyaloshinskii-Moriya interaction. The formation of such asymmetric DWs is confirmed by a micromagnetic simulation. The present prediction proposes a possible origin of the experimental asymmetry related to chiral damping.
ISSN
1882-0778
URI
https://hdl.handle.net/10371/191179
DOI
https://doi.org/10.7567/APEX.9.053001
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