Resumen

HERNANDEZ DE LA LUZ, A. D.; RODRIGUEZ MORENO, M. A.; OLVERA HERNANDEZ, J.  y  HERNANDEZ COCOLETZI, G.. Fuerza de Casimir 1D en semiconductores excitónicos. Superf. vacío [online]. 2006, vol.19, n.2, pp.7-12. ISSN 1665-3521.

We present one-dimensional calculations of the Casimir force between homogeneous and nonhomoge-neous parallel nonlocal excitonic semiconductor slabs. Non local effects are generated by A_n=1 and B_n=1 excitonic transitions in CdS. The force is calculated, in the homogeneous case, as a function of the slab thicknesses d₁ = d₂ = d and the vacuum gap width L between the slabs. In the nonhomogenous case, the slabs are made up of semiinfinite superlattices with an excitonic semiconductor-insulator unit cell, in such case the force is a function of the superlattice period d = d_S + d_A and L. The non local Casimir force for the A_n=1 exciton, which corresponds to the lower excitonic transition energies, is always greater.

Palabras llave : Casimir force; excitonic transitions; nonlocal effects; superlattices.