Accession Number:
AD0647001
Title:
EXCITON AND IMPURITY STATES IN RARE GAS SOLIDS,
Descriptive Note:
Corporate Author:
CHICAGO UNIV ILL
Personal Author(s):
Report Date:
1966-01-01
Pagination or Media Count:
58.0
Abstract:
The formalism of the preceding paper AD-646 998 is applied to a calculation of the first excited states of 1 pure crystals of Kr and Xe and 2 rare gas solids containing a substitutional Xe impurity. A Hartree potential for the bare electron-hole interaction is constructed for each system, and is screened within the random phase approximation. Matrix elements of the corresponding pseudopotentials, projected according to the Cohen-Heine prescription, are derived in the Wannier representation. Band structures inferred from optical data are fitted to simple interpolation formulae. By transformation to a symmetric representation for the envelope function, the Wannier difference equations are reduced to manageable form and solved by a matrix technique. Although the calculations contain no disposable parameters, obtained binding energies and oscillator strengths are found to be in excellent agreement with experiment. Author
Descriptors:
Subject Categories:
- Solid State Physics