Abstract
The exchange energy for the Wannier exciton is calculated by solving a previously derived two-body Hamiltonian . The solution of the eigenvalue problem of in the effectivemass approximation is performed with a numerical diagonalization method. The values obtained for the exchange energy in several II-VI compounds are between 10 and 20% of the binding energy of the pure hydrogenlike exciton. The comparison with experimental results shows a satisfactory agreement.
- Received 11 August 1969
DOI:https://doi.org/10.1103/PhysRevB.3.433
©1971 American Physical Society