Optical Properties of Substitutional H- and Li-Atom Impurities in Solid Argon and Neon

Abstract

A tight-binding formalism is presented for the calculation of the excitation energies and oscillator strengths for low-lying excitations, and of the ground-state polarizabilities, of substitutional impurities in rare-gas solids. The formalism is applied to hydrogen- and lithium-atom impurities in solid neon and in solid argon at 0\ifmmode^\circ\else\textdegree\fi{}K, and numerical results are presented.