Electric-Field Control of Spin–Orbit Torques in WS2/Permalloy Bilayers

Electric-Field Control of Spin–Orbit Torques in WS2/Permalloy Bilayers

Transition metal dichalcogenides (TMDs) have drawn great attention owing to their potential for electronic, optoelectronic, and spintronic applications. In TMDs/ferromagnetic bilayers, an efficient spin current can be generated by the TMDs to manipulate the magnetic moments in the ferromagnetic laye...

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Veröffentlicht in:ACS applied materials & interfaces 2018-01, Vol.10 (3), p.2843-2849
Hauptverfasser: Lv, Weiming, Jia, Zhiyan, Wang, Bochong, Lu, Yuan, Luo, Xin, Zhang, Baoshun, Zeng, Zhongming, Liu, Zhongyuan
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Condensed Matter
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Physics
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container_issue 3
container_start_page 2843
container_title ACS applied materials & interfaces
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creator Lv, Weiming
Jia, Zhiyan
Wang, Bochong
Lu, Yuan
Luo, Xin
Zhang, Baoshun
Zeng, Zhongming
Liu, Zhongyuan
description Transition metal dichalcogenides (TMDs) have drawn great attention owing to their potential for electronic, optoelectronic, and spintronic applications. In TMDs/ferromagnetic bilayers, an efficient spin current can be generated by the TMDs to manipulate the magnetic moments in the ferromagnetic layer. In this work, we report on the electric-field modulation of spin–orbit torques (SOTs) in WS2/NiFe bilayers by the spin-torque ferromagnetic resonance technique. It is found that the radio frequency current can induce a spin accumulation at the WS2/NiFe interface because of the interfacial Rashba–Edelstein effect. As a consequence, the SOT ratio between the field-like and antidamping-like torques can be effectively controlled by applying the back-gate voltage in WS2/NiFe bilayers. These results provide a strategy for controlling the SOT by using semiconducting TMDs.
doi_str_mv 10.1021/acsami.7b16919
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title Electric-Field Control of Spin–Orbit Torques in WS2/Permalloy Bilayers
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