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Asymmetric Hysteresis for Probing Dzyaloshinskii-Moriya Interaction

Title
Asymmetric Hysteresis for Probing Dzyaloshinskii-Moriya Interaction
Authors
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
2016-07
Citation
Nano Letters, 16(7), 4438-4446
Type
Article
Article Type
Article
Keywords
Asymmetric HysteresisAsymmetric Hysteresis LoopChiral MagnetChiral MagnetsDzyaloshinskii-Moriya InteractionHysteresisMagnetic AnisotropyMagnetic MaterialsMagnetismMagnetoelectronicsNanomagnetismNanomagnetismsPerpendicular Magnetic AnisotropySpintronics
ISSN
1530-6984
Abstract
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.
URI
http://hdl.handle.net/20.500.11750/2252
DOI
10.1021/acs.nanolett.6b01593
Publisher
American Chemical Society
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


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