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Local environment of fluorine atoms in Sr2Ca n − 1Cu n O2n + δF2 ± y (n = 2, 3) high-temperature superconductors grown under high pressure

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Abstract

The local environment of fluorine atoms in Sr2Ca n − 1Cu n O2n + δF2 ± y (n = 2, 3) high-temperature superconductors (T c = 99 and 111 K) is studied using soft x-ray emission and absorption spectroscopy. The fluorine spectra of the samples studied are found to be similar to those of SrF2, which supports the conjecture that fluorine atoms substitute for apex oxygen atoms and form double SrF layers.

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Authors and Affiliations

  1. Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Yekaterinburg, 620219, Russia

    E. Z. Kurmaev, L. D. Nechkina & D. A. Zatsepin

  2. Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, S7N 5E2, Canada

    A. Moewes & R. Wilks

  3. National Institute for Materials Science, Tsukuba, 305-0044, Japan

    T. Kawashima & E. Takayama-Muromachi

Authors
  1. E. Z. Kurmaev
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  2. A. Moewes
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  3. R. Wilks
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  4. L. D. Nechkina
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  5. D. A. Zatsepin
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  6. T. Kawashima
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  7. E. Takayama-Muromachi
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Translated from Fizika Tverdogo Tela, Vol. 47, No. 7, 2005, pp. 1170–1174.

Original Russian Text Copyright © 2005 by Kurmaev, Moewes, Wilks, Nechkina, Zatsepin, Kawashima, Takayama-Muromachi.

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Kurmaev, E.Z., Moewes, A., Wilks, R. et al. Local environment of fluorine atoms in Sr2Ca n − 1Cu n O2n + δF2 ± y (n = 2, 3) high-temperature superconductors grown under high pressure. Phys. Solid State 47, 1211–1215 (2005). https://doi.org/10.1134/1.1992593

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  • DOI: https://doi.org/10.1134/1.1992593

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