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Optical and magneto-optical properties of periodic Co double layer film |
Xia Wen-Bin (夏文斌)a, Gao Jin-Long (高锦龙)a, Zhang Shao-Yin (张绍银)b, Chen Le-Yi (陈乐易)a, Tang Yan-Mei (唐妍梅)a, Tang Shao-Long (唐少龙)a, Du You-Wei (都有为)a |
a Nanjing National Laboratory of Microstructures, Department of Physics and Jiangsu Provincial Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, China;
b School of Science, Institute of Condensed Matter Physics, Linyi University, Linyi 276005, China |
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Abstract Co double layer film (CoDLF) consisting of a disk-array layer and an antidot-array layer, both with square order, was investigated. Both the reflectivity and Kerr spectra of CoDLF show anisotropic effects when the azimuthal angle of incident light changes. From the simulation result of surface plasmon polaritons (SPPs), we attribute the reflectivity minima and Kerr angle maxima in the spectra mainly to the excitation of different diffractional orders' SPPs. More interestingly, the Kerr angle changes sign at specific wavelengths. We attribute these phenomena to the excitation of SPPs and localized surface plasmons (LSPs), and the interaction between them.
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Received: 22 April 2014
Revised: 13 May 2014
Accepted manuscript online:
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PACS:
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33.57.+c
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(Magneto-optical and electro-optical spectra and effects)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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78.20.Ls
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(Magneto-optical effects)
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85.70.Sq
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(Magnetooptical devices)
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Fund: Project supported by the National Key Project of Fundamental Research of China (Grant Nos. 2012CB932304 and 2010CB923404), the National Natural Science Foundation of China (Grant Nos. 11374146 and U1232210), and the Priority Academic Program Development of Jiangsu Higher Education Institutions. |
Corresponding Authors:
Tang Shao-Long
E-mail: tangsl@nju.edu.cn
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About author: 33.57.+c; 73.20.Mf; 78.20.Ls; 85.70.Sq |
Cite this article:
Xia Wen-Bin (夏文斌), Gao Jin-Long (高锦龙), Zhang Shao-Yin (张绍银), Chen Le-Yi (陈乐易), Tang Yan-Mei (唐妍梅), Tang Shao-Long (唐少龙), Du You-Wei (都有为) Optical and magneto-optical properties of periodic Co double layer film 2014 Chin. Phys. B 23 103303
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