Current-induced torques in black phosphorus/permalloy bilayers due to crystal symmetry

Current-induced spin-torques in two-dimensional (2D) heterostructures have attracted extensive attention due to their importance in understanding the underlying fundamental physics and developing low-power dissipation nanoelectronics. Here, the Permalloy/black phosphorus (BP) bilayer devices are fab...

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Bibliographic Details
Published in:Applied physics letters 2020-08, Vol.117 (6)
Main Authors: Lv, Wenxing, Cai, Jialin, Li, Zhilin, Lv, Weiming, Shao, Yan, Li, Shangkun, Zhang, Baoshun, Chang, Yukai, Liu, Zhongyuan, Zeng, Zhongming
Format: Article
Language:English
Subjects:
Applied physics
Bilayers
Ferromagnetic resonance
Ferromagnetism
Ferrous alloys
Heterostructures
Magnetic alloys
Nanoelectronics
Phosphorus
Symmetry
Torque
Two dimensional materials
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Summary:Current-induced spin-torques in two-dimensional (2D) heterostructures have attracted extensive attention due to their importance in understanding the underlying fundamental physics and developing low-power dissipation nanoelectronics. Here, the Permalloy/black phosphorus (BP) bilayer devices are fabricated, and spin-torque ferromagnetic resonance (ST-FMR) measurements are utilized to investigate the spin-torque effect in the heterostructure. An obvious out-of-plane antidamping torque is observed, which could be associated with the broken mirror symmetry of BP. These results show the possibility of manipulating magnetization by semiconductor field-effect devices based on 2D materials and provide a clear avenue for engineering spintronic devices based on 2D materials.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0013363