Exciton-vibrational coupling in molecular aggregates: Electronic versus vibronic dimer
(2012) In Chemical Physics 394(1). p.21-28- Abstract
- The influence of exciton-vibrational coupling on the energy level structure, oscillator strength, and relaxation dynamics is investigated for two different excitonic dimer models. As compared with a purely electronic dimer, the inclusion of local vibrational modes within a vibronic dimer gives rise to a complex energy level structure including avoided crossings and changes of the nature of the exciton states from electronic to vibrational character. Besides these static properties, the dissipative dynamics of the two models is systematically investigated using Redfield relaxation theory. In case of the vibronic dimer this allows to treat selected vibrational degrees of freedom beyond the limits of perturbation theory and Markov... (More)
- The influence of exciton-vibrational coupling on the energy level structure, oscillator strength, and relaxation dynamics is investigated for two different excitonic dimer models. As compared with a purely electronic dimer, the inclusion of local vibrational modes within a vibronic dimer gives rise to a complex energy level structure including avoided crossings and changes of the nature of the exciton states from electronic to vibrational character. Besides these static properties, the dissipative dynamics of the two models is systematically investigated using Redfield relaxation theory. In case of the vibronic dimer this allows to treat selected vibrational degrees of freedom beyond the limits of perturbation theory and Markov approximation. It is demonstrated that the vibronic dimer gives rise to transient vibrational population trapping in the one-exciton manifold. (C) 2011 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2416149
- author
- Polyutov, Sergey LU ; Kuehn, Oliver and Pullerits, Tönu LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Frenkel excitons, Vibronic coupling, Dissipation theory
- in
- Chemical Physics
- volume
- 394
- issue
- 1
- pages
- 21 - 28
- publisher
- Elsevier
- external identifiers
-
- wos:000299678900004
- scopus:84856296994
- ISSN
- 0301-0104
- DOI
- 10.1016/j.chemphys.2011.12.006
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- a7d8eae9-bb79-40d3-8ad8-be48e447adf5 (old id 2416149)
- date added to LUP
- 2016-04-01 13:51:11
- date last changed
- 2023-11-12 23:01:06
@article{a7d8eae9-bb79-40d3-8ad8-be48e447adf5,
abstract = {{The influence of exciton-vibrational coupling on the energy level structure, oscillator strength, and relaxation dynamics is investigated for two different excitonic dimer models. As compared with a purely electronic dimer, the inclusion of local vibrational modes within a vibronic dimer gives rise to a complex energy level structure including avoided crossings and changes of the nature of the exciton states from electronic to vibrational character. Besides these static properties, the dissipative dynamics of the two models is systematically investigated using Redfield relaxation theory. In case of the vibronic dimer this allows to treat selected vibrational degrees of freedom beyond the limits of perturbation theory and Markov approximation. It is demonstrated that the vibronic dimer gives rise to transient vibrational population trapping in the one-exciton manifold. (C) 2011 Elsevier B.V. All rights reserved.}},
author = {{Polyutov, Sergey and Kuehn, Oliver and Pullerits, Tönu}},
issn = {{0301-0104}},
keywords = {{Frenkel excitons; Vibronic coupling; Dissipation theory}},
language = {{eng}},
number = {{1}},
pages = {{21--28}},
publisher = {{Elsevier}},
series = {{Chemical Physics}},
title = {{Exciton-vibrational coupling in molecular aggregates: Electronic versus vibronic dimer}},
url = {{http://dx.doi.org/10.1016/j.chemphys.2011.12.006}},
doi = {{10.1016/j.chemphys.2011.12.006}},
volume = {{394}},
year = {{2012}},
}