Spin-orbit torques in perpendicularly magnetized Ir22Mn78/Co20Fe60B20/MgO multilayer
Abstract
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 θSHE = +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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 28, 2016
- Source ID
- 10.1063/1.4968785
Entities
People
- Bingcheng Zhao
- Ching-Tzu Chen
- Congli He
- Di Wu
- Guoqiang Yu
- Kang L. Wang
- Kin L. Wong
- Pedram Khalili Amiri
- Qiming Shao
- Seyed Armin Razavi
- Xiang Li
- Zongzhi Zhang
Organizations
- China Scholarship Council
- Defense Advanced Research Projects Agency
- Fudan University
- International Business Machines Corporation (Armonk, NY)
- King Abdulaziz City for Science and Technology
- National Natural Science Foundation of China
- National Science Foundation
- Office of Basic Energy Sciences
- University of California