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Large Nonlinear Kerr Angle in non-Centrosymmetric Fe/AlGaAs (001) Heterostructure

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Abstract

A large nonlinear magneto-optical effect is observed in a non-centrosymmetric Fe/AlGaAs (001) heterostructure. This effect is a direct consequence of interference between second-harmonic optical waves of magnetic and crystallographic origin, generated at ferromagnetic Fe interface and bulk AlGaAs, respectively. The longitudinal nonlinear Kerr rotation is measured to be 1.6° along the [1-10] hard axis, about two orders of magnitude stronger than the linear equivalent. The rotational second-harmonic signal shows large magnetic contrast along all the in-plane directions, demonstrating a high sensitivity to the magnetization of an anisotropic interface in the longitudinal geometry.

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Authors and Affiliations

  1. The College of William and Mary, Williamsburg, 23187, VA, USA

    Haibin Zhao, Diyar Talbayev & Gunter Luepke

  2. Naval Research Laboratory, Washington, 20375, DC, USA

    Aubrey Hanbicki, Connie Li & Berend Jonker

Authors
  1. Haibin Zhao
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  2. Diyar Talbayev
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  3. Gunter Luepke
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  4. Aubrey Hanbicki
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  5. Connie Li
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  6. Berend Jonker
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Zhao, H., Talbayev, D., Luepke, G. et al. Large Nonlinear Kerr Angle in non-Centrosymmetric Fe/AlGaAs (001) Heterostructure. MRS Online Proceedings Library 941, 207 (2006). https://doi.org/10.1557/PROC-0941-Q02-07

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  • DOI: https://doi.org/10.1557/PROC-0941-Q02-07

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