Electronic structure of SrPt_4Ge_{12}: a combined photoelectron spectroscopy and band structure study

Details Electronic structure of SrPt_4Ge_{12}: a combined photoelectron spectroscopy and band structure study Electronic structure of SrPt_4Ge_{12}: a combined photoelectron spectroscopy and band structure study

2009-06-10

arxiv.org/abs/0906.1871v1

Physics

Condensed Matter

Superconductivity

Scientific paper

We present a combined study of the electronic structure of the superconducting skutterudite derivative SrPt4Ge12 by means of X-ray photoelectron spectroscopy and full potential band structure calculations including an analysis of the chemical bonding. We establish that the states at the Fermi level originate predominantly from the Ge 4p electrons and that the Pt 5d shell is effectively full. We find excellent agreement between the measured and the calculated valence band spectra, thereby validating that band structure calculations in combination with photoelectron spectroscopy can provide a solid basis for the modeling of superconductivity in the compounds MPt4Ge12 (M = Sr, Ba, La, Pr) series.

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