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X-RAY EMISSION AND ABSORPTION SPECTRA AND ELECTRONIC STRUCTURE OFMgB2

Author

Listed:
  • E. Z. KURMAEV

    (Institute of Metal Physics, Russian Academy of Sciences – Ural Division, 620219 Yekaterinburg, Russia)

  • I. I. LYAKHOVSKAYA

    (Institute of Physics, St Petersburg University, St Petersburg, Russia)

  • J. KORTUS

    (Center for Computational Materials Science, Naval Research Laboratory, Washington DC 20375, USA)

  • M. DEMETER

    (University of Osnabrueck, Sektion of Physik, D-49069 Osnabrueck, Germany)

  • M. NEUMANN

    (University of Osnabrueck, Sektion of Physik, D-49069 Osnabrueck, Germany)

  • T. IMAZONO

    (Research Institute for Scientific Measurements, Tohoku University, Sendai 980-8577, Japan)

  • N. MIYATA

    (Research Institute for Scientific Measurements, Tohoku University, Sendai 980-8577, Japan)

  • M. YANAGIHARA

    (Research Institute for Scientific Measurements, Tohoku University, Sendai 980-8577, Japan)

  • M. WATANABE

    (Research Institute for Scientific Measurements, Tohoku University, Sendai 980-8577, Japan)

  • T. MURANAKA

    (Department of Physics, Aoyama-Gakuin University, Tokyo 157-8572, Japan)

  • J. AKIMITSU

    (Department of Physics, Aoyama-Gakuin University, Tokyo 157-8572, Japan)

Abstract

Measurements of X-ray emission and absorption of the constituents ofMgB2are presented. The results obtained are in good agreement with calculated X-ray spectra, with dipole matrix elements taken into account. The comparison of X-ray emission spectra of graphite,AlB2, andMgB2in the binding energy scale supports the idea of charge transfer from σ to π bands, which creates holes at the top of the bonding σ bands and drives the high-Tcsuperconductivity inMgB2.

Suggested Citation

  • E. Z. Kurmaev & I. I. Lyakhovskaya & J. Kortus & M. Demeter & M. Neumann & T. Imazono & N. Miyata & M. Yanagihara & M. Watanabe & T. Muranaka & J. Akimitsu, 2002. "X-RAY EMISSION AND ABSORPTION SPECTRA AND ELECTRONIC STRUCTURE OFMgB2," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 9(02), pages 1097-1102.
    • Handle: RePEc:wsi:srlxxx:v:09:y:2002:i:02:n:s0218625x02003408
    DOI: 10.1142/S0218625X02003408
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