Tuning the interfacial spin-orbit coupling with ferroelectricity

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Author
Fang, Mei
Wang, Yanmei
Wang, Hui
Hou, Yusheng
Vetter, Eric
Kou, Yunfang
Yang, Wenting
Yin, Lifeng
Xiao, Zhu
Li, Zhou
Affiliation
Univ Arizona, Dept Phys
Issue Date
2020-05-26

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Publisher
NATURE PUBLISHING GROUP
Citation
Fang, M., Wang, Y., Wang, H., Hou, Y., Vetter, E., Kou, Y., ... & Shen, J. (2020). Tuning the interfacial spin-orbit coupling with ferroelectricity. Nature Communications, 11(1), 1-8.
Journal
NATURE COMMUNICATIONS
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© The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visithttp://creativecommons.org/licenses/by/4.0/.
Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract
Detection and manipulation of spin current lie in the core of spintronics. Here we report an active control of a net spin Hall angle, θSHE(net), in Pt at an interface with a ferroelectric material PZT (PbZr0.2Ti0.8O3), using its ferroelectric polarization. The spin Hall angle in the ultra-thin Pt layer is measured using the inverse spin Hall effect with a pulsed tunneling current from a ferromagnetic La0.67Sr0.33MnO3 electrode. The effect of the ferroelectric polarization on θSHE(net) is enhanced when the thickness of the Pt layer is reduced. When the Pt layer is thinner than 6 nm, switching the ferroelectric polarization even changes the sign of θSHE(net). This is attributed to the reversed polarity of the spin Hall angle in the 1st-layer Pt at the PZT/Pt interface when the ferroelectric polarization is inverted, as supported by the first-principles calculations. These findings suggest a route for designing future energy efficient spin-orbitronic devices using ferroelectric control.
Note
Open access journal
ISSN
2041-1723
PubMed ID
32457302
DOI
10.1038/s41467-020-16401-7
Version
Final published version
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