journal article·2024-11-26

Tunable Intrinsic Spin Hall Conductivity in Two-Dimensional van der Waals Ferroelectric WTe2

Peng Zhang, Shunbo Hu, Heng Gao, Wenliang Yao, Jie Li, Yin Wang, Musen Li, Wei Ren

ACS Applied Electronic Materials· Volume 6· Issue 11
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Abstract

We conducted a systematic study of the spin Hall conductivity (SHC) of bilayer WTe 2 and investigated the effects of interlayer sliding and interlayer distance on the SHC. We discovered that while the SHC is robust against changes in interlayer sliding, it can be tuned by adjusting the distance between the layers. We found that the interlayer distance-dependent SHC arises from interlayer coupling, which determines the hybridization strength of W- d and Te- p orbitals and subsequently affects the SHC. Therefore, changing the distance between layers in bilayer WTe 2 can effectively tune the SHC. These findings not only enhance our fundamental understanding of the SHC in bilayer WTe 2 but also provide guidelines for the development of next-generation spintronic devices.
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Research context

OpenAlex topics: 2D Materials and Applications · Electronic and Structural Properties of Oxides · Topological Materials and Phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Physics Department, International Center for Quantum and Molecular Structures, Materials Genome Institute, Shanghai University, Shanghai 200444, China

Institute for the Conservation of Cultural Heritage, School of Cultural Heritage and Information Management, Shanghai University, Shanghai 200444, China

Key Laboratory of Silicate Cultural Relics Conservation (Ministry of Education), Shanghai University, Shanghai 200444, China

School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China

Funding

Major Scientific Project of Zhejiang Laboratory · Shanxi Provincial Science and Technology Department · Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China · Postdoctoral Fellowship Program (Grade C) of China Postdoctoral Science Foundation under · Special Funds of the National Natural Science Foundation of China · Young Scientists Fund of the National Natural Science Foundation of China

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