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Chiral magnetization textures stabilized by the Dzyaloshinskii-Moriya interaction during spin-orbit torque switching

Author(s)
Perez, N.; Martinez, E.; Torres, L.; Emori, Satoru; Woo, Seong hoon; Beach, Geoffrey Stephen; ... Show more Show less
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Abstract
We study the effect of the Dzyaloshinskii-Moriya interaction (DMI) on current-induced magnetic switching of a perpendicularly magnetized heavy-metal/ferromagnet/oxide trilayer both experimentally and through micromagnetic simulations. We report the generation of stable helical magnetization stripes for a sufficiently large DMI strength in the switching region, giving rise to intermediate states in the magnetization and confirming the essential role of the DMI on switching processes. We compare the simulation and experimental results to a macrospin model, showing the need for a micromagnetic approach. The influence of the temperature on the switching is also discussed.
Date issued
2014-03
URI
http://hdl.handle.net/1721.1/91647
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Perez, N., E. Martinez, L. Torres, S.-H. Woo, S. Emori, and G. S. D. Beach. “Chiral Magnetization Textures Stabilized by the Dzyaloshinskii-Moriya Interaction During Spin-Orbit Torque Switching.” Appl. Phys. Lett. 104, no. 9 (March 3, 2014): 092403. © 2014 AIP Publishing LLC
Version: Final published version
ISSN
0003-6951
1077-3118

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