Evidence of Optical Circular Dichroism in GaAs-Based Nanowires Partially Covered with Gold
Semiconductor nanostructures hybridized with metals have been known to
offer new opportunities in nonlinear optics, plasmonics, lasing, biosensors;
among them GaAs-based nanowires (NWs) hybridized with gold can offer new
functionalities, as chiral sensing and light manipulation, as well as circular
polarization sources. This study investigates GaAs–AlGaAs–GaAs NWs fabricated
by self-catalyzed growth on Si substrates, and partially covered with gold,
thus inducing the symmetry breaking and a potential chiral response. Three