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Giant interfacial spin Hall angle from Rashba-Edelstein effect revealed by the spin Hall Hanle process
Abstract
The Rashba-Edelstein effect (REE), which generates interfacial spin polarization and subsequent spin current, is a compelling spin-charge conversion mechanism for spintronic applications, since it’s not limited by the elemental spin-orbit couplings. In this work we demonstrate REE at Pt/ferroelectric interfaces by showing a positive correlation between polarization and effective spin Hall angle in the recently elucidated spin Hall Hanle effects (SHHE), in which a Larmor precession of spin polarization in a diffusion process from the interface manifest as magnetoresistance and Hall effect. We show that REE leads to a large enhancement of the effective spin Hall angle of ferroelectric interface Pt/h-LuFeO3 compared with that of Pt/Al2O3, without obvious differences in the spin relaxation time. Modeling using SHHEs involving REE as an additional source of interfacial polarization suggests that REE can lead to an interfacial spin Hall angle (0.4 ± 0.1) in Pt/h-LuFeO3 that is one order of magnitude larger than the bulk value of Pt. Our results demonstrate that a ferroelectric interface can produce large spin-charge conversion and that SHHEs are a sensitive tool for characterizing interfacial spin-transport properties.
- Authors:
-
- University of Nebraska, Lincoln, NE (United States)
- North Carolina State University, Raleigh, NC (United States)
- Publication Date:
- Research Org.:
- University of Nebraska-Lincoln, NE (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 2229449
- Grant/Contract Number:
- SC0019173; SC0020992
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 108; Journal Issue: 24; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Electrical generation of spin carriers; Spin current; Spintronics
Citation Formats
Li, Jing, Comstock, Andrew H., McConnell, Aeron, Li, Xin, Yun, Yu, Sun, Dali, and Xu, Xiaoshan. Giant interfacial spin Hall angle from Rashba-Edelstein effect revealed by the spin Hall Hanle process. United States: N. p., 2023.
Web. doi:10.1103/physrevb.108.l241403.
Li, Jing, Comstock, Andrew H., McConnell, Aeron, Li, Xin, Yun, Yu, Sun, Dali, & Xu, Xiaoshan. Giant interfacial spin Hall angle from Rashba-Edelstein effect revealed by the spin Hall Hanle process. United States. https://doi.org/10.1103/physrevb.108.l241403
Li, Jing, Comstock, Andrew H., McConnell, Aeron, Li, Xin, Yun, Yu, Sun, Dali, and Xu, Xiaoshan. Mon .
"Giant interfacial spin Hall angle from Rashba-Edelstein effect revealed by the spin Hall Hanle process". United States. https://doi.org/10.1103/physrevb.108.l241403.
@article{osti_2229449,
title = {Giant interfacial spin Hall angle from Rashba-Edelstein effect revealed by the spin Hall Hanle process},
author = {Li, Jing and Comstock, Andrew H. and McConnell, Aeron and Li, Xin and Yun, Yu and Sun, Dali and Xu, Xiaoshan},
abstractNote = {The Rashba-Edelstein effect (REE), which generates interfacial spin polarization and subsequent spin current, is a compelling spin-charge conversion mechanism for spintronic applications, since it’s not limited by the elemental spin-orbit couplings. In this work we demonstrate REE at Pt/ferroelectric interfaces by showing a positive correlation between polarization and effective spin Hall angle in the recently elucidated spin Hall Hanle effects (SHHE), in which a Larmor precession of spin polarization in a diffusion process from the interface manifest as magnetoresistance and Hall effect. We show that REE leads to a large enhancement of the effective spin Hall angle of ferroelectric interface Pt/h-LuFeO3 compared with that of Pt/Al2O3, without obvious differences in the spin relaxation time. Modeling using SHHEs involving REE as an additional source of interfacial polarization suggests that REE can lead to an interfacial spin Hall angle (0.4 ± 0.1) in Pt/h-LuFeO3 that is one order of magnitude larger than the bulk value of Pt. Our results demonstrate that a ferroelectric interface can produce large spin-charge conversion and that SHHEs are a sensitive tool for characterizing interfacial spin-transport properties.},
doi = {10.1103/physrevb.108.l241403},
journal = {Physical Review. B},
number = 24,
volume = 108,
place = {United States},
year = {Mon Dec 11 00:00:00 EST 2023},
month = {Mon Dec 11 00:00:00 EST 2023}
}
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