Journal
APPLIED PHYSICS LETTERS
Volume 109, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4968785
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Funding
- C-SPIN and FAME, two of six centers of STARnet, a Semiconductor Research Corporation Program - MARCO
- DARPA
- National Science Foundation [ECCS 1611570]
- Nanosystems Engineering Research Center for Translational Applications of Nanoscale Multiferroic Systems (TANMS) Cooperative Agreement [EEC-1160504]
- SHINES Center, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [S000686]
- China Scholarship Council (CSC)
- 973 Program [2014CB921104]
- National Natural Science Foundation of China (NSFC) [11474067]
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The current-induced spin-orbit torques (SOTs) in the perpendicularly magnetized Ir22Mn78/Co20Fe60B20/MgO structures are investigated. The damping-and field-like torques are characterized using a harmonic technique. The spin Hall angle of Ir22Mn78 is determined to be theta(SHE) = +0.057 +/- 0.002. The SOT-driven magnetization switching is also demonstrated with the assistance of an external in-plane field. Furthermore, the magneto-optical Kerr effect imaging experiments show that the magnetization switching is realized through domain nucleation and domain wall motion. These results may promise potential practical applications in high-performance SOT devices based on the antiferromagnetic materials. Published by AIP Publishing.
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