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Distinctive character of electronic and vibrational coherences in disordered molecular aggregates

Butkus, Vytautas; Zigmantas, Donatas LU ; Abramavicius, Darius and Valkunas, Leonas (2013) In Chemical Physics Letters 587. p.93-98
Abstract
Coherent dynamics of coupled molecules are effectively characterized by the two-dimensional electronic spectroscopy. Depending on the coupling between electronic and vibrational states, oscillating signals of purely electronic, purely vibrational or mixed character are observed with the help of oscillation maps, constructed from time-resolved spectra. Amplitude of beatings caused by electronic coherences is heavily affected by energetic disorder and consequently electronic coherences are quickly dephased. Beatings with vibrational character weakly depend on the disorder, ensuring their long-time survival. We show that detailed modeling of two-dimensional spectroscopy signals of molecular aggregates provides direct information on the origin... (More)
Coherent dynamics of coupled molecules are effectively characterized by the two-dimensional electronic spectroscopy. Depending on the coupling between electronic and vibrational states, oscillating signals of purely electronic, purely vibrational or mixed character are observed with the help of oscillation maps, constructed from time-resolved spectra. Amplitude of beatings caused by electronic coherences is heavily affected by energetic disorder and consequently electronic coherences are quickly dephased. Beatings with vibrational character weakly depend on the disorder, ensuring their long-time survival. We show that detailed modeling of two-dimensional spectroscopy signals of molecular aggregates provides direct information on the origin of the coherent beatings. (C) 2013 Elsevier B. V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemical Physics Letters
volume
587
pages
93 - 98
publisher
Elsevier
external identifiers
  • wos:000326104500018
  • scopus:84886719220
ISSN
0009-2614
DOI
10.1016/j.cplett.2013.09.043
language
English
LU publication?
yes
id
1a47087b-00a8-42d6-bf5b-fd63c5c93042 (old id 4204354)
date added to LUP
2014-01-13 10:12:01
date last changed
2018-12-02 03:47:48
@article{1a47087b-00a8-42d6-bf5b-fd63c5c93042,
  abstract     = {Coherent dynamics of coupled molecules are effectively characterized by the two-dimensional electronic spectroscopy. Depending on the coupling between electronic and vibrational states, oscillating signals of purely electronic, purely vibrational or mixed character are observed with the help of oscillation maps, constructed from time-resolved spectra. Amplitude of beatings caused by electronic coherences is heavily affected by energetic disorder and consequently electronic coherences are quickly dephased. Beatings with vibrational character weakly depend on the disorder, ensuring their long-time survival. We show that detailed modeling of two-dimensional spectroscopy signals of molecular aggregates provides direct information on the origin of the coherent beatings. (C) 2013 Elsevier B. V. All rights reserved.},
  author       = {Butkus, Vytautas and Zigmantas, Donatas and Abramavicius, Darius and Valkunas, Leonas},
  issn         = {0009-2614},
  language     = {eng},
  pages        = {93--98},
  publisher    = {Elsevier},
  series       = {Chemical Physics Letters},
  title        = {Distinctive character of electronic and vibrational coherences in disordered molecular aggregates},
  url          = {http://dx.doi.org/10.1016/j.cplett.2013.09.043},
  volume       = {587},
  year         = {2013},
}