Optical Pump and Probe Measurements of the Magnetization Dynamics in Antiferromagnetically Coupled Fe Layers
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概要
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Magnetization oscillations were excited in antiferromagnetically coupled Fe/Cr/Fe films using a time-resolved magneto-optical ‘pump and probe’ method. Both acoustic and optical oscillation modes were confirmed from Fourier transformation signals. The dependence of the excited frequency on the external magnetic field was characteristic of an antiferromagnetically coupled film, which was reproduced by the calculation based on a macro-spin model. In addition, it was found that a strongly coupled film (with a thinner Cr layer in this study) led to faster speed oscillations.
著者
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Kimel A.
Radboud Univ.
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Kirilyuk A.
Radboud Univ.
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Rasing T.
Radboud Univ.
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Seki T.
Institute of Plasma Physics, Nagoya University
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SUZUKI Y.
Graduate School of Science and Technology, Niigata University
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Rasing T.
Radboud University Nijmegen, Institute for Molecules and Materials
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Tomita H.
Graduate School of Engineering Science, Osaka University
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Khorsand A.
Radboud University Nijmegen, Institute for Molecules and Materials
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Kirilyuk A.
Radboud University Nijmegen, Institute for Molecules and Materials
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