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"Volume effects on the crystal-field splittings of CeZ (Z=Sb,Te)"
P. Roura-Bas, V. Vildosola and A.M. Llois
Proc. of the Workshop "At the Frontiers of Condensed Matter III - New Trends in Structural, Electronic and Magnetic Properties of Matter", Centro Atómico Constituyentes-CNEA, Buenos Aires, Argentina, December 11-15, 2006. Ed. J. Guevara, A.M. Llois, G. Lozano and R. Weht
Physica B Condens. Matter. 398(2) (2007) 442-445
Among the Cerium compounds, the monochalcogenides CeY (Y=S,Se,Te) as well as the monopnictides CeX (X=P,As,Sb,Bi) show very interesting physical properties. In particular the heavier ones (CeSb,CeBi and CeTe) have a very small crystalline electric field splitting. In this contribution we study volume effects on the values of the crystal-field splittings (ΔCF) of CeSb and CeTe and compare them with experimental results for the CeSb1-xTex alloys and with previous calculations considering only chemical pressure. We calculate the splittings using a mixed procedure which combines ab initio calculations with a many body technique.
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