Magnetic droplet nucleation with a homochiral Néel domain wall

Sanghoon Kim; Peong Hwa Jang; Duck Ho Kim; Mio Ishibashi; Takuya Taniguchi; Takahiro Moriyama; Kab Jin Kim; Kyung Jin Lee; Teruo Ono

doi:10.1103/PhysRevB.95.220402

Magnetic droplet nucleation with a homochiral Néel domain wall

Sanghoon Kim, Peong Hwa Jang, Duck Ho Kim, Mio Ishibashi, Takuya Taniguchi, Takahiro Moriyama, Kab Jin Kim, Kyung Jin Lee, Teruo Ono

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

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.

Original language	English
Article number	220402
Journal	Physical Review B
Volume	95
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.95.220402
Publication status	Published - 2017 Jun 12

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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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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AU - Kim, Sanghoon

AU - Jang, Peong Hwa

AU - Kim, Duck Ho

AU - Ishibashi, Mio

AU - Taniguchi, Takuya

AU - Moriyama, Takahiro

AU - Kim, Kab Jin

AU - Lee, Kyung Jin

AU - Ono, Teruo

PY - 2017/6/12

Y1 - 2017/6/12

N2 - 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.

AB - 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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