Electric modulation of the Fermi arc spin transport via three-terminal configuration in topological semimetal nanowires

祝光宇 ¹宁纪爱 ¹王建坤 ¹刘心洁 ¹杨佳洁 ¹林本川 ²王硕²

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作者信息

1. Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China;International Quantum Academy,Shenzhen 518048,China
2. Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China;International Quantum Academy,Shenzhen 518048,China;Guangdong Provincial Key Laboratory of Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China
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Abstract

Spin-momentum locking is a key feature of the topological surface state,which plays an important role in spintronics.The electrical detection of current-induced spin polarization protected by the spin-momentum locking in nonmagnetic sys-tems provides a new platform for developing spintronics,while previous studies were mostly based on magnetic materials.In this study,the spin transport measurement of Dirac semimetal Cd3As2 was studied by three-terminal geometry,and a hysteresis loop signal with high resistance and low resistance state was observed.The hysteresis was reversed by reversing the current direction,which illustrates the spin-momentum locking feature of Cd3As2.Furthermore,we realized the on-off states of the spin signals through electric modulation of the Fermi arc via the three-terminal configuration,which enables the great potential of Cd3As2 in spin field-effect transistors.

Key words

topological semimetal/spin-momentum locking/quantum transport/spin field-effect transistor

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基金项目

National Key Research and Development Program of China(2020YFA0309300)

National Key Research and Development Program of China(2022YFA1403700)

National Natural science Foundation of China(12004158)

National Natural science Foundation of China(12074162)

National Natural science Foundation of China(91964201)

Key-Area Research and Development Program of Guangdong Province(2018B030327001)

Guangdong Provincial Key Laboratory(2019B121203002)

Guangdong Basic and Applied Basic Research Foundation(2022B1515130005)

出版年

2024

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

参考文献量32

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