|Enhancement of spin-orbit torque in WS2/Co/Pt trilayers via spin-orbit proximity effect|
|Li, Yuzhi; Song, Yakai; Zhang, Jianrong; Yang, Qiu; Xi, L(席力); Zuo, YL(左亚路); Zhang, JL(张俊丽); Si, Mingsu; Xue, DS(薛德胜); Yang, DZ(杨德政)|
|Source Publication||PHYSICAL REVIEW B
Impact Factor & Quartile|
|Abstract||Enhancement of spin-orbit torque (SOT) efficiency in ferromagnet/heavy-metal bilayer is promising for the realization of low-power spintronic devices. Here we show that inserting a single-layer WS2 between the substrate and Co/Pt layers, can reduce Co coercivity by ∼28% and increase dampinglike SOT efficiency by ∼30%, up to 35.07 Oe/(107A/cm2). When inserting WS2 with different layers, we further demonstrate that these phenomena only exist for odd WS2 layers, i.e., monolayer and trilayer, while they disappear for even WS2 layers, i.e., bilayer. Theoretical analysis based on the first-principles calculations suggests that the results originate from the thickness-controlled charge transfer between WS2 and Co, which is consistent with the spin-orbit proximity effect. © 2023 American Physical Society.|
|Publisher||American Physical Society
|EI Accession Number||20231313809177
|EI Keywords||Tungsten compounds
|EI Classification Number||549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
; 802.2 Chemical Reactions
; 913.1 Production Engineering
|Original Document Type||Journal article (JA)
Key Laboratory for Magnetism and Magnetic Materials, Ministry of Education, Lanzhou University, Lanzhou; 730000, China
|First Author Affilication||School of Physical Sicence and Technology
Li, Yuzhi,Song, Yakai,Zhang, Jianrong,et al. Enhancement of spin-orbit torque in WS2/Co/Pt trilayers via spin-orbit proximity effect[J].
PHYSICAL REVIEW B,2023,107(10).
Li, Yuzhi.,Song, Yakai.,Zhang, Jianrong.,Yang, Qiu.,Xi, Li.,...&Yang, Dezheng.(2023).Enhancement of spin-orbit torque in WS2/Co/Pt trilayers via spin-orbit proximity effect.PHYSICAL REVIEW B,107(10).
Li, Yuzhi,et al."Enhancement of spin-orbit torque in WS2/Co/Pt trilayers via spin-orbit proximity effect".PHYSICAL REVIEW B 107.10(2023).
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