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Electronic structure of CeRh2Sn4

Gamża M., Schnelle W., Ślebarski A., Rosner H.

Materials Science Poland

2007

Vol. 25, No. 2

269--274

We performed a study of the compound CeRh2Sn4, not investigated so far. Our samples were carefully characterized by X-ray powder diffraction analysis and by locally resolved, energy dispersive X-ray spectroscopy (EDXS). We present a combined experimental and theoretical study based on X-ray photoelectron spectroscopy (XPS) data together with ab initio band structure calculations. The Ce 3d XPS spectrum indicates a small mixed valence of Ce. Analysis of the 3d94f 2 weight using the Gunnarsson-Schönhammer theory suggests a hybridization between Ce 4f states and the conduction band of about 85 meV. The valence band spectrum, dominated by Rh 4d states, is in a very good agreement with the calculated one.