P. Monachesi et A. Continenza, ELECTRONIC AND VOLUMETRIC EFFECTS IN TERNARY COMPOUNDS OF YTTERBIUM, Physical review. B, Condensed matter, 54(19), 1996, pp. 13558-13565
We present complete results of self-consistent electronic-structure ca
lculations of Yb-based and Lu-based ternary intermetallic compounds, n
amely, YbCu4Ag, YbCu4Au, YbCu4Pd. and LuCu4Ag. All these materials sho
w a characteristic peak in the optical conductivity at about 2-2.5 eV.
From the analysis of the allowed interband transitions among the calc
ulated bands at the Gamma point, we explain the origin of this peak. Y
bCu4Ag is a Kondo system with a high Kondo temperature. YbCu4-Au and -
PJ order magnetically below 1 Ii We give an interpretation of the orig
in of the different degree of f-d hybridization observed experimentall
y in these Yb-based compounds.