Possibility of off-center-exciton formation in BaFBr
- 15 August 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 40 (5) , 3246-3248
- https://doi.org/10.1103/physrevb.40.3246
Abstract
Extended-ion calculations have been performed in order to test the possibility of spontaneous off-center motion of excitons in BaFBr. The off-center motion is a mode of decay to F,H centers in the material. The lattice distortion energy is computed self-consistently with the extended-ion method. It is energetically favorable to form off-center excitons displaced roughly 2 a.u. along the molecular axis for fluorine and bromine centers. The fluorine center is stabilized most due to its low-energy F-center ground state.This publication has 18 references indexed in Scilit:
- Picosecond Laserphotolysis on Photo-Induced Defect Formation Process in KI CrystalJournal of the Physics Society Japan, 1987
- Equilibrium configuration of the self-trapped exciton in CaF2and SrF2Journal of Physics C: Solid State Physics, 1985
- Study of defects in insulators by the hybrid method with floating 1-s Gaussian basisNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1984
- The initial protection of defects in alkali halides: F and H centre production by non-radiative decay of the self-trapped excitonJournal of Physics C: Solid State Physics, 1977
- Electronic structure of the self-trapped exciton in the potassium halidesSolid State Communications, 1977
- Study of-Center Formation in KCl on a Picosecond Time ScalePhysical Review Letters, 1975
- Electronic structure of the self-trapped exciton in alkali fluorides and chloridesJournal of Physics C: Solid State Physics, 1975
- Electronic structure of the self-trapped exciton in sodium chlorideJournal of Physics C: Solid State Physics, 1974
- Transient Formations of Color Centers in KBr Crystals under the Pulsed Electron BeamJournal of the Physics Society Japan, 1972
- Low-Temperature Recombination Luminescence in Alkali Halide CrystalsPhysical Review B, 1964