期刊
PHYSICAL REVIEW LETTERS
卷 124, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.217701
关键词
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资金
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [KL1811/18, 318612841]
- Graduate School of Excellence Materials Science in Mainz [DFG/GSC266]
- DFG [SPP 2137]
- Collaborative Research Center [SFB/TRR173, A01-290396061/TRR173, A11-268565 370/TRR173, B02-290319996/TRR173]
- European Union's Framework Programme for Research and Innovation Horizon 2020 (2014-2020) under the Marie Sklodowska-Curie Grant [860060]
- Korea Institute of Science and Technology (KIST) institutional program [2E30600]
- National Research Council of Science & Technology (NST) - Korea government (Ministry of Science and ICT) [CAP16-01-KIST]
- Julich Supercomputing Centre [jiff40]
- RWTH Aachen University [jiff40]
Controlling magnetism by electric fields offers a highly attractive perspective for designing future generations of energy-efficient information technologies. Here, we demonstrate that the magnitude of current-induced spin-orbit torques in thin perpendicularly magnetized CoFeB films can be tuned and even increased by electric-field generated piezoelectric strain. Using theoretical calculations, we uncover that the subtle interplay of spin-orbit coupling, crystal symmetry, and orbital polarization is at the core of the observed strain dependence of spin-orbit torques. Our results open a path to integrating two energy efficient spin manipulation approaches, the electric-field-induced strain and the current-induced magnetization switching, thereby enabling novel device concepts.
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