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Direct observation of magnetic Friedel oscillation at Fe(001) surface

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Abstract

Surface magnetism of Fe (001) was investigated by the in situ iron-57 probe layer method with a synchrotron Mössbauer source. The observed layer-by-layer internal hyperfine field shows a marked reduction at the surface and an oscillatory behavior with increasing depth in the individual layers below the surface. The calculated layer-by-layer hyperfine interactions (hyperfine field, isomer shift, and quadrupole shift) were consistent with the experimental results. The results give direct evidence for the magnetic Friedel oscillations, penetrating several layers from the Fe (001) surface.

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Acknowledgements

The authors thank Prof. K. Mibu, Prof. Y. Yamada, Dr. H. Naramoto, Dr. S. Entani, Dr. T. Inami, and Dr. Y. Katayama for their helpful discussions. This work was carried out at SPring-8 (proposal Nos. 2017A3551, B3551, 2018A3552, B3551, B3552, and 2019A3551) and was partially supported by a Grant-in-Aid for Scientific Research (Grant Nos. 16H03875, 17H07376, 17K18373, and 18K13985) from the Japan Society for the Promotion of Science.

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Authors and Affiliations

  1. National Institutes for Quantum Science and Technology, Sayo, Hyogo, 679-5148, Japan

    Takaya Mitsui, Tetsuro Ueno, Tetsu Watanuki & Makoto Seto

  2. National Institutes for Quantum Science and Technology, Takasaki, Gunma, 370-1292, Japan

    Takaya Mitsui, Seiji Sakai, Songtian Li, Tetsuro Ueno & Tetsu Watanuki

  3. Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka, 590-0494, Japan

    Yasuhiro Kobayashi & Makoto Seto

  4. Faculty of Science and Technology, Hirosaki University, Bunkyocho, Hirosaki, Aomori, 036-8152, Japan

    Ryo Masuda

  5. The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan

    Hisazumi Akai

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  1. Takaya Mitsui
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This article is part of the Topical Collection on Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2021), 5-10 September 2021, Brasov, Romania.

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Mitsui, T., Sakai, S., Li, S. et al. Direct observation of magnetic Friedel oscillation at Fe(001) surface. Hyperfine Interact 242, 37 (2021). https://doi.org/10.1007/s10751-021-01772-0

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