Tunable Magneto-Optical Kerr Effect in Fe Films Underneath a Two-Dimensional Array of Polystyrene Spheres Covered by Au Nanocaps

张霞; 石磊; 李晶; 夏云杰; 时钟; 周仕明

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Tunable Magneto-Optical Kerr Effect in Fe Films Underneath a Two-Dimensional Array of Polystyrene Spheres Covered by Au Nanocaps

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For Fe layers covered by two-dimensional arrays of hexagonal close-packed polystyrene spheres which are hemispherically covered by Au films on the top,fine structures are observed in reflection,magneto-optical Kerr rotation and ellipticity spectra.The Kerr rotation achieves peaks or exhibits a narrow resonance-like spectral lineshape near the reflection minima,depending on the mechanism of the reflection dips.The Kerr rotation peaks and the resonance-like lineshape both are shifted with the sphere diameters.These phenomena can be attributed to the excitation of surface plasmon resonance and Fabry–Pérot modes.

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《中国物理快报：英文版》 |2013年第3期|168-171|共4页
作者
张霞; 石磊; 李晶; 夏云杰; 时钟; 周仕明;
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作者单位

Surface Physics State Laboratory and Department of Physics;

Fudan University;

Shanghai 200433;

Department of Optical Science and Engineering;

Fudan University;

Shanghai 200433;

Shandong Province Key Lab of Laser Polarization and Information;

Qufu Normal University;

Qufu 273165;

School of Physics Science and Engineering;

Tongji University;

Shanghai 200092;

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原文格式 PDF
正文语种 chi
中图分类高分子化学（高聚物）;
关键词
spectra.; rotation; resonance;

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Tunable Magneto-Optical Kerr Effect in Fe Films Underneath a Two-Dimensional Array of Polystyrene Spheres Covered by Au Nanocaps

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