Electronic structure and photoemission studies on Kondo semimetal U $\mathsf{_2}$ Ru $\mathsf{_2}$ Sn

G. Chelkowska, J. Morkowski (), A. Szajek, J. Stepien-Damm and R. Troc

The European Physical Journal B: Condensed Matter and Complex Systems, 2003, vol. 35, issue 3, 349-355

Abstract: Electronic structure is studied of the compound U 2 Ru 2 Sn showing Kondo type anomalies. The X-ray photoemission spectrum (XPS) on a single crystal was measured and the crystal structure refinement was done. The electronic band structure was calculated by the tight-binding linear muffin-tin orbital method in the atomic sphere approximation, with non-local corrections to the exchange-correlation potential and spin-orbit effects included. The XPS valence band is well reproduced by the calculated one. Calculations suggest metallic character of U 2 Ru 2 Sn and give the electronic specific heat coefficient by a factor 1.4 larger than the experimental value reported in literature. Copyright Springer-Verlag Berlin/Heidelberg 2003

Date: 2003
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DOI: 10.1140/epjb/e2003-00287-y

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