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Transverse Magneto-Optical Kerr Effect in Magnetite Covered by Array of Gold Nanostripes

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Abstract

We study theoretically and experimentally a magneto-optical Kerr effect (TMOKE) in magnetite film covered by sub-wavelength grating consisting of gold nanostripes. Our rigorous coupled wave analysis (RCWA) simulations of optical reflection and transmission coefficients of the structure under study predict a multiple enhancement of TMOKE response in transmission as compared with a plain magnetite film without gold nanostripes. We demonstrate that due to the high absorption losses in magnetite film, the quality factors of the optical resonances in our sample are low which results in wide areas on the dispersion diagram where the TMOKE can be observed.

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ACKNOWLEDGMENTS

Authors thank the RFBR (project no. 15-52-12011) and the Deutsche Forschungsgemeinschaft (DFG) within the framework of the International Collaborative Research Centre (ICRC) TRR 160.

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Authors and Affiliations

  1. Skolkovo Institute of Science and Technology, 143025, Moscow, Russia

    S. A. Dyakov & N. A. Gippius

  2. Experimentelle Physik 2, Technische Universitat Dortmund, 44221, Dortmund, Germany

    F. Spitzer, I. Akimov & M. Bayer

  3. Ioffe Institute, 194021, St. Petersburg, Russia

    I. Akimov, D. A. Yavsin, S. I. Pavlov, A. B. Pevtsov & M. Bayer

  4. Spin Optics Laboratory, St. Petersburg State University, 198504, St. Petersburg, Russia

    S. Y. Verbin

  5. Moscow State University, 119234, Moscow, Russia

    S. G. Tikhodeev

Authors
  1. S. A. Dyakov
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  2. F. Spitzer
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  3. I. Akimov
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  4. D. A. Yavsin
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  5. S. I. Pavlov
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  6. S. Y. Verbin
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  7. S. G. Tikhodeev
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  8. N. A. Gippius
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  9. A. B. Pevtsov
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  10. M. Bayer
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Corresponding author

Correspondence to S. A. Dyakov.

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Dyakov, S.A., Spitzer, F., Akimov, I. et al. Transverse Magneto-Optical Kerr Effect in Magnetite Covered by Array of Gold Nanostripes. Semiconductors 52, 1857–1860 (2018). https://doi.org/10.1134/S1063782618140099

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  • DOI: https://doi.org/10.1134/S1063782618140099

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