Imprinting spatial helicity structure of vector vortex beam on spin texture in semiconductors

Abstract

We present the transfer of the spatially variant polarization of topologically structured light to the spatial spin texture in a semiconductor quantum well. The electron spin texture, which is a circular pattern with repeating spin-up and spin-down states whose repetition rate is determined by the topological charge, is directly excited by a vector vortex beam with a spatial helicity structure. The generated spin texture efficiently evolves into a helical spin wave pattern owing to the spin-orbit effective magnetic fields in the persistent spin helix state by controlling the spatial wave number of the excited spin mode. By tuning the repetition length and azimuthal angle, we simultaneously generate helical spin waves with opposite phases by a single beam.

arXiv comment6 pages, 4 figures

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Cited by in corpus (6)

• Light-induced torque in ferromagnetic metals via orbital angular momentum generated by photon-helicity
• Direct imprinting of arbitrary spin textures using programmable structured light in a semiconductor two-dimensional electron gas
• Imprinting spiral Higgs waves onto superconductors with vortex beams
• Nanoscale engineering and dynamical stabilization of mesoscopic spin textures
• Optical-vortex-pulse induced nonequilibrium spin textures in spin-orbit coupled electrons
• Photo-induced Non-collinear Interlayer RKKY Coupling in Bulk Rashba Semiconductors