Coherent Picture on the Pure Spin Transport between $\mathrm{Ag}/\mathrm{Bi}$ and Ferromagnets

Coherent Picture on the Pure Spin Transport between $Ag / Bi$ and Ferromagnets

J. Cheng, B. F. Miao, Z. Liu, M. Yang, K. He, Y. L. Zeng, H. Niu, X. Yang, Z. Q. Wang, X. H. Hong, S. J. Fu, L. Sun, Y. Liu, Y. Z. Wu, Z. Yuan, and H. F. Ding

Phys. Rev. Lett. 129, 097203 – Published 24 August 2022

Abstract

In a joint effort of both experiments and first-principles calculations, we resolve a hotly debated controversy and provide a coherent picture on the pure spin transport between $Ag / Bi$ and ferromagnets. We demonstrate a strong inverse Rashba-Edelstein effect (IREE) at the interface in between $Ag / Bi$ with a ferromagnetic metal (FM) but not with a ferromagnetic insulator. This is in sharp contrast to the previously claimed IREE at $Ag / Bi$ interface or inverse spin Hall effect dominated spin transport. A more than one order of magnitude modulation of IREE signal is realized for different $Ag / Bi$ -FM interfaces, casting strong tunability and a new direction for searching efficient spintronics materials.

Received 25 January 2022
Accepted 26 July 2022

DOI:https://doi.org/10.1103/PhysRevLett.129.097203

Physics Subject Headings (PhySH)

Inverse spin Hall effect Rashba coupling Spin current Spin pumping

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

J. Cheng ^1,*, B. F. Miao ^1,2,*,†, Z. Liu ^3,*, M. Yang¹, K. He¹, Y. L. Zeng ¹, H. Niu ¹, X. Yang ¹, Z. Q. Wang¹, X. H. Hong¹, S. J. Fu¹, L. Sun^1,2, Y. Liu³, Y. Z. Wu^2,4, Z. Yuan ^3,‡, and H. F. Ding ^1,2,§

¹National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, People’s Republic of China
²Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People’s Republic of China
³Center for Advanced Quantum Studies and Department of Physics, Beijing Normal University, Beijing 100875, People’s Republic of China
⁴Department of Physics, Fudan University, 220 Handan Road, Shanghai 200433, People’s Republic of China

^*These authors contribute equally to this work.
^†Corresponding author. bfmiao@nju.edu.cn
^‡Corresponding author. zyuan@bnu.edu.cn
^§Corresponding author. hfding@nju.edu.cn

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Vol. 129, Iss. 9 — 26 August 2022

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Physical Review Letters

Coherent Picture on the Pure Spin Transport between Ag/Bi and Ferromagnets

J. Cheng, B. F. Miao, Z. Liu, M. Yang, K. He, Y. L. Zeng, H. Niu, X. Yang, Z. Q. Wang, X. H. Hong, S. J. Fu, L. Sun, Y. Liu, Y. Z. Wu, Z. Yuan, and H. F. Ding

Phys. Rev. Lett. 129, 097203 – Published 24 August 2022

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Coherent Picture on the Pure Spin Transport between $Ag / Bi$ and Ferromagnets