X-RAY EMISSION AND ABSORPTION SPECTRA AND ELECTRONIC STRUCTURE OFMgB2

E. Z. Kurmaev, I. I. Lyakhovskaya, J. Kortus, M. Demeter, M. Neumann, T. Imazono, N. Miyata, M. Yanagihara, M. Watanabe, T. Muranaka and J. Akimitsu
Additional contact information
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

Surface Review and Letters (SRL), 2002, vol. 09, issue 02, 1097-1102

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.

Keywords: 74.70.Ad; 78.70.Dm; 78.70.En; 74.25.Jb (search for similar items in EconPapers)
Date: 2002
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DOI: 10.1142/S0218625X02003408

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