Stashkevich, Andrey A.Roussigne, YvesPoddubny, Alexander N.Cherif, S.-M.Zheng, Y.Vidal, FrankYagupov, Ilya V.Slobozhanyuk, A. P.Belov, PavelKivshar, Yuri2018-11-292018-11-291098-0121http://hdl.handle.net/1885/152937We study the optical properties of arrays of ultrathin cobalt nanowires by means of the Brillouin scattering of light on magnons. We employ the Stokes/anti-Stokes scattering asymmetry to probe the circular polarization of a local electric field induced inside nanowires by linearly polarized light waves. We observe the anomalous polarization conversion of the opposite sign than that in a bulk medium or thick nanowires with a great enhance- ment of the degree of circular polarization attributed to the unconventional refraction in a nanowire medium. A rigorous simulation of the electric field polarization as a function of the wire diameter and spacing reveals the reversed polarization for a thin sparse wire array, in full quantitative agreement with experimental results.application/pdf201510.1103/PhysRevB.92.2144362018-11-29