Current-Induced Switching of Perpendicularly Magnetized Magnetic Layers Using Spin Torque from the Spin Hall Effect

Title
Current-Induced Switching of Perpendicularly Magnetized Magnetic Layers Using Spin Torque from the Spin Hall Effect
Authors
이억재Luqiao LiuT. J. GudmundsenD. C. RalphR. A. Buhrman
Issue Date
2012-08
Publisher
Physical review letters
Citation
VOL 109, NO 9-096602-5
Abstract
We show that in a perpendicularly magnetized Pt/Co bilayer the spin-Hall effect (SHE) in Pt can produce a spin torque strong enough to efficiently rotate and switch the Co magnetization. We calculate the phase diagram of switching driven by this torque, finding quantitative agreement with experiments. When optimized, the SHE torque can enable memory and logic devices with similar critical currents and improved reliability compared to conventional spin-torque switching. We suggest that the SHE torque also affects current-driven magnetic domain wall motion in Pt/ferromagnet bilayers.
URI
http://pubs.kist.re.kr/handle/201004/66487
ISSN
0031-9007
Appears in Collections:
KIST Publication > Article
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