PHOTOEMISSION AND PHOTOABSORPTION INVESTIGATION OF THE ELECTRONIC STRUCTURE OF YTTERBIUM-DOPED STRONTIUM FLUOROAPATITE

A. J. Nelson, T. van Buuren, C. Bostedt, K. I. Schaffers and Lou Terminello
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A. J. Nelson: Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
T. van Buuren: Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
C. Bostedt: Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
K. I. Schaffers: Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
Lou Terminello: Lawrence Livermore National Laboratory, Livermore, CA 94550, USA

Surface Review and Letters (SRL), 2002, vol. 09, issue 01, 387-391

Abstract: X-ray photoemission and X-ray photoabsorption were used to study the composition and the electronic structure of ytterbium-doped strontium fluoroapatite (Yb:S-FAP). High resolution photoemission measurements on the valence band electronic structure were used to evaluate the density of occupied states of this fluoroapatite. Element-specific density of unoccupied electronic states in Yb:S-FAP was probed by X-ray absorption spectroscopy (XAS) at the Yb 4d (N4,5-edge), Sr 3d (M4,5-edge), P 2p (L2,3-edge), F 1s and O 1s (K-edges) absorption edges. These results provide the first measurements of the electronic structure and surface chemistry of this material.

Date: 2002
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DOI: 10.1142/S0218625X02002361

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