We present full potential ab initio calculations to study structural and electronic properties of $\mathrm{Ce}{M}_2{\mathrm{Si}}_2$ with $M=\mathrm{Ru},$ Rh, and Pd. Two kind of calculations are performed: one considering the $4f$ states as hybridized ones and another simulating Ce systems with nonhybridized $4f$ states. We calculate the hybridization function and analyze the influence of the $4f$ states on structural properties such as equilibrium volume, $c/a$ ratio, and bulk modulus and study their evolution together with that of the spin magnetic moment under applied hydrostatic pressure. The results are compared with experimental data.

• Received 10 June 2003

DOI:https://doi.org/10.1103/PhysRevB.69.125116