1973/02/15 by J.G de Vooght, K. K. Bajaj · 1 voice
Engineering · Physics and Astronomy · #Molecular Junctions and Nanostructures #Semiconductor Quantum Structures and Devices #Spectroscopy and Quantum Chemical Studies
paper · doi:10.1103/physrevb.7.1472
openalex publication_date 1973/02/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/26
An analytic expression for the ground-state energy of a Wannier exciton, interacting with the longitudinal-optical-phonon field of the crystal lattice, is derived. The coupling between the constituents of the exciton, i.e., the electron and the hole, and the optical-phonon field is assumed to be weak, and hence second-order perturbation theory as formulated by Dalgarno and Lewis is used. The theoretically calculated value of the ground-state energy is then compared with its experimentally determined values in various polar crystals and a good agreement is found.