Energy transfer between Jahn-Teller systems in RbMnF3
| Autor: | Wolfgang Gebhardt, Friedrich Wünsch |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
Condensed matter physics
Chemistry 63.20.-e 71.35.-y Exciton Jahn–Teller effect ddc:530 Condensed Matter Physics 530 Physik 78.47.-p Stress (mechanics) Lift (force) 71.70.Ej Condensed Matter::Materials Science 71.20.Ps Octahedron General Materials Science Luminescence Degeneracy (mathematics) Spectroscopy |
| DOI: | 10.5283/epub.26806 |
| Popis: | Energy transfer in RbMnF3 was studied by time-resolved spectroscopy of 4T1g exciton and trap luminescence. Uniaxial stress was used to lift the orientational degeneracy of the Jahn-Teller distorted MnF6 octahedra. Stress also reduces the excitonic transfer rates considerably. The most drastic reduction of transfer and a nonexponential decay was observed with (110) stress. Evidence for two-dimensional transfer under (110) stress is given by computer simulation of random-walk processes and by a calculation of nearest-neighbour transfer integrals. |
| Databáze: | OpenAIRE |
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