Spin dynamics of triplet photoexcitations in C{sub 60}: Evidence for a dynamic Jahn-Teller effect
Journal Article
·
· Physical Review, B: Condensed Matter
- Department of Physics, University of Utah, Salt Lake City, Utah 84112 (United States)
We have used the absorption-detected magnetic-resonance (ADMR) technique to study the spin dynamics of triplet photoexcitations in C{sub 60} molecules dispersed in polystyrene glasses. We found that the ADMR spectra contain two triplet powder patterns {ital A} and {ital B} with substantial spin reorientation dynamics, which increases with the temperature. The spin dynamics of triplet {ital A} are successfully modeled by a dynamic Jahn-Teller effect, where the spin reorientation process is among six degenerate {ital D}{sub 5{ital d}} deformations of the excited C{sub 60} molecule. Triplet {ital B}, however, is extrinsic in origin, with substantially different spin dynamics.
- DOE Contract Number:
- FG03-93ER45490
- OSTI ID:
- 82244
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 4 Vol. 52; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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