Electric-Field Control of Spin-Orbit Torques in Perpendicularly Magnetized W/CoFeB/MgO Films
- Authors
- Filianina, Mariia; Hanke, Jan-Philipp; Lee, Kyujoon; Han, Dong-Soo; Jaiswal, Samridh; Rajan, Adithya; Jakob, Gerhard; Mokrousov, Yuriy; Klaeui, Mathias
- Issue Date
- 2020-05-26
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.124, no.21
- Abstract
- 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.
- Keywords
- Spintronics; E-control; Spin-orbit torque
- ISSN
- 0031-9007
- URI
- https://pubs.kist.re.kr/handle/201004/118608
- DOI
- 10.1103/PhysRevLett.124.217701
- Appears in Collections:
- KIST Article > 2020
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