title: Localized surface plasmon resonance effects on the magneto-optical activity of continuous Au/Co/Au trilayers.
abstract: We study how the magneto-optical activity in polar configuration of continuous Au/Co/Au trilayers is affected by the excitation of localized plasmon resonances of an array of Au nanodiscs fabricated on top of them over a dielectric SiO(2) spacer. We show that the effect of the nanodiscs array is twofold. First, it optimizes the absorption of light at specific photon energies corresponding to the localized surface plasmon excitation of the array, modifying the reflectivity of the system (we define this effect as the purely optical contribution). Second, upon localized plasmon resonance excitation, the electromagnetic field in the whole system is redistributed, and an enhanced magneto-optical activity occurs at those energies where the electromagnetic field in the magnetic layer is increased (this effect is identified as the purely magneto-optical contribution of the nanodiscs array).
authors.affiliation: Instituto de Microelectrónica de Madrid (CSIC), 28760-Tres Cantos, Madrid, Spain. gaspar@imm.cnm.csic.es
authors.forename: Gaspar
authors.initials: G
authors.lastname: Armelles
authors.forename: Juan Bautista
authors.initials: JB
authors.lastname: González-Díaz
authors.forename: Antonio
authors.initials: A
authors.lastname: García-Martín
authors.forename: José Miguel
authors.initials: JM
authors.lastname: García-Martín
authors.forename: Alfonso
authors.initials: A
authors.lastname: Cebollada
authors.forename: María
authors.initials: M
authors.lastname: Ujué González
authors.forename: Srdjan
authors.initials: S
authors.lastname: Acimovic
authors.forename: Jean
authors.initials: J
authors.lastname: Cesario
authors.forename: Romain
authors.initials: R
authors.lastname: Quidant
authors.forename: Gonçal
authors.initials: G
authors.lastname: Badenes
mesh_terms: D000465:Algorithms; D003035:Cobalt / Q000737:chemistry*; D004574:Electromagnetic Fields; D004867:Equipment Design; D006046:Gold / Q000737:chemistry*; D008027:Light; D008280:Magnetics; D053768:Metal Nanoparticles / Q000737:chemistry*; D015233:Models, Statistical; D036103:Nanotechnology / Q000379:methods; D010100:Oxygen / Q000737:chemistry; D017785:Photons; D012825:Silicon / Q000737:chemistry; D013053:Spectrophotometry / Q000379:methods; D020349:Surface Plasmon Resonance / Q000295:instrumentation* / Q000379:methods*
chemical_list: D003035:Cobalt; D006046:Gold; D010100:Oxygen; D012825:Silicon