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Asymmetric Hysteresis for Probing Dzyaloshinskii-Moriya Interaction
- Asymmetric Hysteresis for Probing Dzyaloshinskii-Moriya Interaction
- Han, DS[Han, Dong-Soo]; Kim, NH[Kim, Nam-Hui]; Kim, JS[Kim, June-Seo]; Yin, YX[Yin, Yuxiang]; Koo, JW[Koo, Jung-Woo]; Cho, J[Cho, Jaehun]; Lee, S[Lee, Sukmock]; Klaui, M[Klaeui, Mathias]; Swagten, HJM[Swagten, Henk J. M.]; Koopmans, B[Koopmans, Bert]; You, CY[You, Chun-Yeol]
- DGIST Authors
- You, CY[You, Chun-Yeol]
- Issue Date
- Nano Letters, 16(7), 4438-4446
- Article Type
- Asymmetric Hysteresis; Asymmetric Hysteresis Loop; Chiral Magnet; Chiral Magnets; Dzyaloshinskii-Moriya Interaction; Hysteresis; Magnetic Anisotropy; Magnetic Materials; Magnetism; Magnetoelectronics; Nanomagnetism; Nanomagnetisms; Perpendicular Magnetic Anisotropy; Spintronics
- The interfacial Dzyaloshinskii-Moriya interaction (DMI) is intimately related to the prospect of superior domain-wall dynamics and the formation of magnetic skyrmions. Although some experimental efforts have been recently proposed to quantify these interactions and the underlying physics, it is still far from trivial to address the interfacial DMI. Inspired by the reported tilt of the magnetization of the side edge of a thin film structure, we here present a quasi-static, straightforward measurement tool. By using laterally asymmetric triangular-shaped microstructures, it is demonstrated that interfacial DMI combined with an in-plane magnetic field yields a unique and significant shift in magnetic hysteresis. By systematic variation of the shape of the triangular objects combined with a droplet model for domain nucleation, a robust value for the strength and sign of interfacial DMI is obtained. This method gives immediate and quantitative access to DMI, enabling a much faster exploration of new DMI systems for future nanotechnology. © 2016 American Chemical Society.
- American Chemical Society
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- Emerging Materials ScienceETC1. Journal Articles
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