SPIN DYNAMICS OF TRIPLET PHOTOEXCITATIONS IN C-60 - EVIDENCE FOR A DYNAMIC JAHN-TELLER EFFECT

被引：15
|
作者：
WEI, X
VARDENY, ZV
机构：
[1] Department of Physics, University of Utah, Salt Lake City
来源：
PHYSICAL REVIEW B | 1995年 / 52卷 / 04期
关键词：
D O I：
10.1103/PhysRevB.52.R2317
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have used the absorption-detected magnetic-resonance (ADMR) technique to study the spin dynamics of triplet photoexcitations in C-60 molecules dispersed in polystyrene glasses. We found that the ADMR spectra contain two triplet powder patterns A and B with substantial spin reorientation dynamics, which increases with the temperature. The spin dynamics of triplet A are successfully modeled by a dynamic Jahn-TelIer effect, where the spin reorientation process is among six degenerate D-5d deformations of the excited C-60 molecule. Triplet B, however, is extrinsic in origin, with substantially different spin dynamics.
引用
收藏
页码：R2317 / R2320
页数：4
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