Enhanced Magneto-optical Kerr effect in magnetic multilayers containing double-negative metamaterials

Dong Yunxia; zhang xiang dong

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Enhanced Magneto-optical Kerr effect in magnetic multilayers containing double-negative metamaterials

Dong Yunxia,zhang xiang dong * #

Beijing Normal University

*Correspondence author

#Submitted by

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Funding: 国家自然科学基金,教育部博士点基金,the National Key Basic Research Special Foundation of China（No.No. 10674017,No.20050027020, 2007CB613205）

Opened online: 9 February 2009

Accepted by: none

Citation: Dong Yunxia,zhang xiang dong.Enhanced Magneto-optical Kerr effect in magnetic multilayers containing double-negative metamaterials[OL]. [ 9 February 2009] http://en.paper.edu.cn/en_releasepaper/content/28567

The magneto-optical Kerr effects in magnetic multilayered structures containing double-negative metamaterials are investigated by using transfer-matrix method. The azimuth rotations and the figure of merit of the magneto-optical effects are calculated as a function of the thickness of the layers and the frequency of the incident wave. It is shown that the magneto-optical effects are not only enhanced largely for the present system in comparison with those in the magnetic multilayered structures containing general metal materials, a giant Kerr rotation near is also observed when the thickness of the sample is far less than the resonant wavelength. The physical origination for such a phenomenon is also analyzed. This means that we can obtain large magneto-optical Kerr effects at very thin magnetic film by using the double-negative metamaterials, which benefit the application in magnetic-optical recording.

Keywords:double-negative metamaterials;magnetic multilayered structure;magneto-optical Kerr effect

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