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| Hauptseite > Publikationsdatenbank > Inverse Orbital Torque via Spin-Orbital Intertwined States |
| Hauptseite > Publikationsdatenbank > Inverse Orbital Torque via Spin-Orbital Intertwined States |
| Journal Article | FZJ-2024-00557 |
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2023
American Physical Society
College Park, Md. [u.a.]
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Please use a persistent id in citations: doi:10.1103/PhysRevApplied.19.014069 doi:10.34734/FZJ-2024-00557
Abstract: While current-induced torque by orbital current has been experimentally found in various structures, evidence for its reciprocity has been missing so far. Here, we report experimental evidence of strong inverse orbital torque in YIG/Pt/CuOx (YIG=Y3Fe5O12) mediated by spin-orbital mixed electronic states in Pt. By injecting spin current from YIG to Pt by the spin pumping via ferromagnetic resonance and by the spin Seebeck effect, we find a pronounced inverse spin Hall effectlike signal. While a part of the signal is explained as being due to the inverse spin-orbital Hall effect in Pt, we also find a substantial increase of the signal in YIG/Pt/CuOx structures compared to the signal in YIG/Pt. We attribute this to the inverse orbital Rashba-Edelstein effect at the Pt/CuOx interface mediated by the spin-orbital coupled states in Pt. Our work paves the way toward understanding of spin-orbital intertwined physics in nonequilibrium and provides a way for electrical detection of the orbital current in orbitronic device applications.
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