TY - JOUR
T1 - Ultrafast orbital Hall effect in metallic nanoribbons
AU - Busch, Oliver
AU - Ziolkowski, Franziska
AU - Göbel, B. rge
AU - Mertig, Ingrid
AU - Henk, J. rgen
N1 - Publisher Copyright: © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2024/1/1
Y1 - 2024/1/1
N2 - The orbital Hall effect can generate currents of angular momentum more efficiently than the spin Hall effect in most metals. However, so far, it has only been understood as a steady-state phenomenon. In this theoretical study, the orbital Hall effect is extended into the time domain. We investigate the orbital angular momenta and their currents induced by a femtosecond laser pulse in a Cu nanoribbon. Our numerical simulations provide detailed insights into the laser-driven electron dynamics on ultrashort timescales with atomic resolution. The ultrafast orbital Hall effect described in this paper is consistent with the familiar pictorial representation of the static orbital Hall effect, but we also find pronounced differences between physical quantities that carry orbital angular momentum and those that carry charge. For example, there are deviations in the time series of the respective currents. This paper lays the foundations for investigating ultrafast Hall effects in confined metallic systems.
AB - The orbital Hall effect can generate currents of angular momentum more efficiently than the spin Hall effect in most metals. However, so far, it has only been understood as a steady-state phenomenon. In this theoretical study, the orbital Hall effect is extended into the time domain. We investigate the orbital angular momenta and their currents induced by a femtosecond laser pulse in a Cu nanoribbon. Our numerical simulations provide detailed insights into the laser-driven electron dynamics on ultrashort timescales with atomic resolution. The ultrafast orbital Hall effect described in this paper is consistent with the familiar pictorial representation of the static orbital Hall effect, but we also find pronounced differences between physical quantities that carry orbital angular momentum and those that carry charge. For example, there are deviations in the time series of the respective currents. This paper lays the foundations for investigating ultrafast Hall effects in confined metallic systems.
UR - http://www.scopus.com/inward/record.url?scp=85186453887&partnerID=8YFLogxK
U2 - 10.1103/PhysRevResearch.6.013208
DO - 10.1103/PhysRevResearch.6.013208
M3 - Article
SN - 2643-1564
VL - 6
JO - Physical Review Research
JF - Physical Review Research
IS - 1
M1 - 013208
ER -