期刊
ACS APPLIED MATERIALS & INTERFACES
卷 -, 期 -, 页码 -出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c11162
关键词
inverse Rashba Edelstein effect; spin pumping; ferromagnetic resonance; transition-metal dichalcogenides; spin-to-charge conversion
资金
- Ministry of Human Resource Development under the IMPRINT program [7519, 7058]
- Department of Electronics and Information Technology (DeitY) , Science & Engineering research board [CRG/2018/001012]
- Department of Electronics and Information Technology (DeitY)
- Science & Engineering research board (SERB) [CRG/2018/001012]
- Joint Advanced Technology Centre at IIT Delhi
- Grand Challenge Project, IIT Delhi
- Department of Science and Technology under the Nanomission program [SR/NM/NT--1041/2016(G)]
- Council of Scientific and Industrial Research (CSIR), Government of India
The interface between TMD and ferromagnetic materials exhibits a large spin-to-charge conversion, which can be used for efficient generation and detection of spin current, opening up new opportunities for novel spintronic devices.
Spin-to-charge conversion is an essential requirement for the implementation of spintronic devices. Recently, monolayers (MLs) of semiconducting transition-metal dichalcogenides (TMDs) have attracted considerable interest for spin-to-charge conversion due to their high spin-orbit coupling and lack of inversion symmetry in their crystal structure. However, reports of direct measurement of spin-to-charge conversion at TMD-based interfaces are very much limited. Here, we report on the room-temperature observation of a large spin-to-charge conversion arising from the interface of Ni80Fe20 (Py) and four distinct large-area (similar to 5 x 2 mm(2)) ML TMDs, namely, MoS2, MoSe2, WS2, and WSe2. We show that both spin mixing conductance and the Rashba efficiency parameter (lambda(IREE)) scale with the spin-orbit coupling strength of the ML TMD layers. The lambda(IREE) parameter is found to range between -0.54 and -0.76 nm for the four ML TMDs, demonstrating a large spin-to-charge conversion. Our findings reveal that the TMD/ferromagnet interface can be used for efficient generation and detection of spin current, opening new opportunities for novel spintronic devices.
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