Localized surface plasmon resonance effects on the magneto-optical activity of continuous Au/Co/Au trilayers

被引：81

作者：

Armelles, Gaspar ^{[1
]}

Bautista Gonzalez-Diaz, Juan ^{[1
]}

Garcia-Martin, Antonio ^{[1
]}

Miguel Garcia-Martin, Jose ^{[1
]}

Cebollada, Alfonso ^{[1
]}

Ujue Gonzalez, Maria ^{[2
]}

Acimovic, Srdjan ^{[2
]}

Cesario, Jean ^{[2
,3
]}

Quidant, Romain ^{[2
,4
]}

Badenes, Goncal ^{[2
]}

机构：

[1] CSIC, Inst Microelect, Madrid 28760, Spain

[2] ICFO, Barcelona 08860, Spain

[3] Univ Aix Marseille 3, CNRS, Inst Fresnel, UMR 6133, F-13397 Marseille 20, France

[4] ICREA, Barcelona 08010, Spain

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 20期

关键词：

D O I：

10.1364/OE.16.016104

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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). (c) 2008 Optical Society of America

引用

页码：16104 / 16112

页数：9

共 26 条

[1] Surface plasma resonance and magneto-optical enhancement in composites containing multicore-shell structured nanoparticles [J].