title: Orbital and spin dynamics of intraband electrons in quantum rings driven by twisted light.
abstract: We theoretically investigate the effect that twisted light has on the orbital and spin dynamics of electrons in quantum rings possessing sizable Rashba spin-orbit interaction. The system Hamiltonian for such a strongly inhomogeneous light field exhibits terms which induce both spin-conserving and spin-flip processes. We analyze the dynamics in terms of the perturbation introduced by a weak light field on the Rasha electronic states, and describe the effects that the orbital angular momentum as well as the inhomogeneous character of the beam have on the orbital and the spin dynamics.
authors.affiliation: Departamento de Física and IFIBA, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Ciudad de Buenos Aires, Argentina. gquinteiro@df.uba.ar
authors.forename: G F
authors.initials: GF
authors.lastname: Quinteiro
authors.forename: P I
authors.initials: PI
authors.lastname: Tamborenea
authors.forename: J
authors.initials: J
authors.lastname: Berakdar
mesh_terms: D003198:Computer Simulation; D004583:Electrons; D008027:Light; D008962:Models, Theoretical; D011789:Quantum Theory; D012542:Scattering, Radiation