Anisotropic Dzyaloshinskii-Moriya interaction in ultrathin epitaxial Au/Co/W(110)

Anisotropic Dzyaloshinskii-Moriya interaction in ultrathin epitaxial Au/Co/W(110) We used Brillouin light scattering spectroscopy to independently determine the in-plane magnetocrystalline anisotropy and the Dzyaloshinskii-Moriya interaction (DMI) in out-of-plane magnetized Au/Co/W(110). We found that the DMI strength is 2–3 times larger along the bcc[1¯10] than along the bcc[001] direction. We use analytical considerations to illustrate the relationship between the crystal symmetry of the stack and the anisotropy of microscopic DMI. Such an anisotropic DMI is the first step to realize isolated elliptical skyrmions or antiskyrmions in thin-film systems with C2v symmetry. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Anisotropic Dzyaloshinskii-Moriya interaction in ultrathin epitaxial Au/Co/W(110)

Abstract

We used Brillouin light scattering spectroscopy to independently determine the in-plane magnetocrystalline anisotropy and the Dzyaloshinskii-Moriya interaction (DMI) in out-of-plane magnetized Au/Co/W(110). We found that the DMI strength is 2–3 times larger along the bcc[1¯10] than along the bcc[001] direction. We use analytical considerations to illustrate the relationship between the crystal symmetry of the stack and the anisotropy of microscopic DMI. Such an anisotropic DMI is the first step to realize isolated elliptical skyrmions or antiskyrmions in thin-film systems with C2v symmetry.
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Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.95.214422
Publisher site
See Article on Publisher Site

Abstract

We used Brillouin light scattering spectroscopy to independently determine the in-plane magnetocrystalline anisotropy and the Dzyaloshinskii-Moriya interaction (DMI) in out-of-plane magnetized Au/Co/W(110). We found that the DMI strength is 2–3 times larger along the bcc[1¯10] than along the bcc[001] direction. We use analytical considerations to illustrate the relationship between the crystal symmetry of the stack and the anisotropy of microscopic DMI. Such an anisotropic DMI is the first step to realize isolated elliptical skyrmions or antiskyrmions in thin-film systems with C2v symmetry.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jun 27, 2017

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