Highly efficient spin injection and readout across Van Der Waals interface
Spin injection, transport, and detection across the interface between a ferromagnet and a spin-carrying channel are crucial for energy-efficient spin logic devices. However, interfacial conductance mismatch, spin dephasing, and inefficient spin-to-charge conversion significantly reduce the efficienc...
| Main Authors: | , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/180692 |
| _version_ | 1826125640103886848 |
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| author | Chen, Hao Tian, Wanghao Zhang, Lishu Song, Peng Jia, Lanxin Chen, Jingsheng Zhu, Zhifeng Feng, Yuan Ping Loh, Kian Ping |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Chen, Hao Tian, Wanghao Zhang, Lishu Song, Peng Jia, Lanxin Chen, Jingsheng Zhu, Zhifeng Feng, Yuan Ping Loh, Kian Ping |
| author_sort | Chen, Hao |
| collection | NTU |
| description | Spin injection, transport, and detection across the interface between a ferromagnet and a spin-carrying channel are crucial for energy-efficient spin logic devices. However, interfacial conductance mismatch, spin dephasing, and inefficient spin-to-charge conversion significantly reduce the efficiency of these processes. In this study, it is demonstrated that an all van der Waals heterostructure consisting of a ferromagnet (Fe3GeTe2) and Weyl semimetal enables a large spin readout efficiency. Specifically, a nonlocal spin readout signal of 150 mΩ and a local spin readout signal of 7.8 Ω is achieved, which reach the signal level useful for practical spintronic devices. The remarkable spin readout signal is attributed to suppressed spin dephasing channels at the vdW interfaces, long spin diffusion, and efficient charge-spin interconversion in Td-MoTe2. These findings highlight the potential of vdW heterostructures for spin Hall effect-enabled spin detection with high efficiency, opening up new possibilities for spin-orbit logic devices using vdW interfaces. |
| first_indexed | 2025-03-09T14:05:21Z |
| format | Journal Article |
| id | ntu-10356/180692 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-03-09T14:05:21Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1806922024-10-25T15:40:57Z Highly efficient spin injection and readout across Van Der Waals interface Chen, Hao Tian, Wanghao Zhang, Lishu Song, Peng Jia, Lanxin Chen, Jingsheng Zhu, Zhifeng Feng, Yuan Ping Loh, Kian Ping School of Electrical and Electronic Engineering School of Materials Science and Engineering CINTRA CNRS/NTU/THALES, UMI 3288 Engineering Spin injection Spin readout Spin injection, transport, and detection across the interface between a ferromagnet and a spin-carrying channel are crucial for energy-efficient spin logic devices. However, interfacial conductance mismatch, spin dephasing, and inefficient spin-to-charge conversion significantly reduce the efficiency of these processes. In this study, it is demonstrated that an all van der Waals heterostructure consisting of a ferromagnet (Fe3GeTe2) and Weyl semimetal enables a large spin readout efficiency. Specifically, a nonlocal spin readout signal of 150 mΩ and a local spin readout signal of 7.8 Ω is achieved, which reach the signal level useful for practical spintronic devices. The remarkable spin readout signal is attributed to suppressed spin dephasing channels at the vdW interfaces, long spin diffusion, and efficient charge-spin interconversion in Td-MoTe2. These findings highlight the potential of vdW heterostructures for spin Hall effect-enabled spin detection with high efficiency, opening up new possibilities for spin-orbit logic devices using vdW interfaces. Ministry of Education (MOE) Nanyang Technological University Published version K.P.L. thanks funding support from Singapore’s National Research Foundation Competitive Research Program, Prime Minister’s Office, grant number: NRF-CRP22-2019-0006. P.S. acknowledges funding support from Nanyang Technological University (021070-00001) and Ministry of Education Tier 2 project (MOE-T2EP50122-0017). 2024-10-21T04:21:10Z 2024-10-21T04:21:10Z 2024 Journal Article Chen, H., Tian, W., Zhang, L., Song, P., Jia, L., Chen, J., Zhu, Z., Feng, Y. P. & Loh, K. P. (2024). Highly efficient spin injection and readout across Van Der Waals interface. Small, e2403073-. https://dx.doi.org/10.1002/smll.202403073 1613-6810 https://hdl.handle.net/10356/180692 10.1002/smll.202403073 38966892 2-s2.0-85197921819 e2403073 en 021070-00001 MOE-T2EP50122-0017 Small © 2024 The Author(s). Small published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. application/pdf |
| spellingShingle | Engineering Spin injection Spin readout Chen, Hao Tian, Wanghao Zhang, Lishu Song, Peng Jia, Lanxin Chen, Jingsheng Zhu, Zhifeng Feng, Yuan Ping Loh, Kian Ping Highly efficient spin injection and readout across Van Der Waals interface |
| title | Highly efficient spin injection and readout across Van Der Waals interface |
| title_full | Highly efficient spin injection and readout across Van Der Waals interface |
| title_fullStr | Highly efficient spin injection and readout across Van Der Waals interface |
| title_full_unstemmed | Highly efficient spin injection and readout across Van Der Waals interface |
| title_short | Highly efficient spin injection and readout across Van Der Waals interface |
| title_sort | highly efficient spin injection and readout across van der waals interface |
| topic | Engineering Spin injection Spin readout |
| url | https://hdl.handle.net/10356/180692 |
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