Characteristic temperature dependence of the 4f occupancy in the Kondo system CeSi2

Article

关键词: X-RAY-ABSORPTION;    PHOTOEMISSION SPECTRA;    RARE-EARTH;    CE;    SPECTROSCOPY;    RESOLUTION;    EXPANSION;    COVALENCY;    VALENCY;    GROWTH;   

DOI  :  10.1103/PhysRevB.63.115107

来源: SCIE

【 摘 要 】

We present a Ce-L-3 x-ray absorption spectroscopic study (XAS) of CeSi2 at different temperatures. The extracted Ce 4f occupancy shows a strong dependence upon temperature that qualitatively agrees with theoretical expectations based on the single-impurity Anderson model. We additionally discuss the reliability of L-3 XAS performed on nearly trivalent rare-earth compounds in comparison with other high-energy spectroscopy techniques.

【 授权许可】

Free