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| Hauptseite > Publikationsdatenbank > Orbital Rashba Effect as a Platform for Robust Orbital Photocurrents |
| Hauptseite > Publikationsdatenbank > Orbital Rashba Effect as a Platform for Robust Orbital Photocurrents |
| Journal Article | FZJ-2024-01657 |
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2024
APS
College Park, Md.
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Please use a persistent id in citations: doi:10.1103/PhysRevLett.132.076901 doi:10.34734/FZJ-2024-01657
Abstract: Orbital current has emerged over the past years as one of the key novel concepts in magnetotransport. Here, we demonstrate that laser pulses can be used to generate large and robust nonrelativistic orbital currents in systems where the inversion symmetry is broken by the orbital Rashba effect. By referring to model and first principles tools, we demonstrate that orbital Rashba effect, accompanied by crystal field splitting, can mediate robust orbital photocurrents without a need for spin-orbit interaction even in metallic systems. We show that such nonrelativistic orbital photocurrents are translated into derivative photocurrents of spin when relativistic effects are taken into account. We thus promote orbital photocurrents as a promising platform for optical generation of currents of angular momentum, and discuss their possible applications.
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