Open AccessELECTRON CORRELATION EFFECT ON C60 EXCITON POLARON
Author(s) -
Huang Qing-Peng,
Ruigang Fu,
Sun X,
Ruigang Fu
Publication year - 1994
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.43.1833
Subject(s) - polaron , exciton , electronic correlation , singlet state , electron , condensed matter physics , lattice (music) , physics , binding energy , hubbard model , atomic physics , superconductivity , quantum mechanics , excited state , acoustics
Exciton polaron states in C60 molecular are theoretically studied in the tight-binding approach supplemented by the extended Hubbard interaction. The binding energies of the lowest singlet and triplet excitons depend sensitively upon the electron correlation. Then the exciton polaron is formed due to the electron-lattice coupling. Relevent experiments in photo-luminescence spectrum of Cso can be explained qualitatively by the present model with moderate interaction strength .