In-plane direct current probing for spin orbit torque-driven effective fields in perpendicularly magnetized heavy metal/ferromagnet/oxide frames.

Sci Rep

Novel Functional Materials and Device Laboratory, Research Institute of Natural Science, Department of Physics, Hanyang University, Seoul, 133-791, Korea.

Published: July 2018

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Article Abstract

Electrical manipulation of magnetization states has been the subject of intense focus as it is a long-standing goal in the emerging field of spintronics. In particular, torque generated by an in-plane current with a strong spin-orbit interaction shows promise for control of the adjacent ferromagnetic state in heavy-metal/ferromagnet/oxide frames. Thus, the ability to unlock precise spin orbit torque-driven effective fields represents one of the key approaches in this work. Here, we address an in-plane direct current measurement approach as a generic alternative tool to identify spin orbit torque-driven effective fields in a full polar angle range without adopting the commonly used harmonic analyses. Our experimental results exhibited a strongly polar angular dependency of the spin orbit torque-driven effective fields observed from Ta or W/CoFeM/MgO frames.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6056570PMC
http://dx.doi.org/10.1038/s41598-018-29397-4DOI Listing

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