Lee, Ho Nyung
AffiliationUniv Arizona, Dept Phys
MetadataShow full item record
PublisherNATURE PUBLISHING GROUP
CitationFang, 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.
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AbstractDetection 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.
NoteOpen access journal
VersionFinal published version