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Magnetic droplet nucleation with a homochiral Neel domain wall

Authors
Kim, SanghoonJang, Peong-HwaKim, Duck-HoIshibashi, MioTaniguchi, TakuyaMoriyama, TakahiroKim, Kab-JinLee, Kyung-JinOno, Teruo
Issue Date
12-6월-2017
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v.95, no.22
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW B
Volume
95
Number
22
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/83144
DOI
10.1103/PhysRevB.95.220402
ISSN
2469-9950
Abstract
We investigate the effect of the Dzyaloshinskii-Moriya interaction (DMI) on magnetic domain nucleation in a ferromagnetic thin film with perpendicular magnetic anisotropy. We propose an extended droplet model to determine the nucleation field as a function of the in-plane field. The model can explain the experimentally observed nucleation in a Co/Ni microstrip with an interfacial DMI. The results are also reproduced by micromagnetic simulation based on the string model. The electrical measurement method proposed here can be widely used to quantitatively determine the DMI energy density.
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