About: Enhancement of Vibronic and Ground-State Vibrational Coherences in 2D Spectra of Photosynthetic Complexes

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1038/srep02029
Description	A vibronic-exciton model is applied to investigate the recently proposed mechanism of enhancement of coherent oscillations due to mixing of electronic and nuclear degrees of freedom. We study a dimer system to elucidate the role of resonance coupling, site energies, vibrational frequency and energy disorder in the enhancement of vibronic-exciton and ground-state vibrational coherences, and to identify regimes where this enhancement is significant. For a heterodimer representing two coupled bachteriochloropylls of the FMO complex, long-lived vibronic coherences are found to be generated only when the frequency of the mode is in the vicinity of the electronic energy difference. Although the vibronic-exciton coherences exhibit a larger initial amplitude compared to the ground-state vibrational coherences, we conclude that, due to the dephasing of the former, both type of coherences have a similar magnitude at longer population time. A vibronic-exciton model is applied to investigate the recently proposed mechanism of enhancement of coherent oscillations due to mixing of electronic and nuclear degrees of freedom. We study a dimer system to elucidate the role of resonance coupling, site energies, vibrational frequency and energy disorder in the enhancement of vibronic-exciton and ground-state vibrational coherences, and to identify regimes where this enhancement is significant. For a heterodimer representing two coupled bachteriochloropylls of the FMO complex, long-lived vibronic coherences are found to be generated only when the frequency of the mode is in the vicinity of the electronic energy difference. Although the vibronic-exciton coherences exhibit a larger initial amplitude compared to the ground-state vibrational coherences, we conclude that, due to the dephasing of the former, both type of coherences have a similar magnitude at longer population time. (en)
Title	Enhancement of Vibronic and Ground-State Vibrational Coherences in 2D Spectra of Photosynthetic Complexes Enhancement of Vibronic and Ground-State Vibrational Coherences in 2D Spectra of Photosynthetic Complexes (en)
skos:prefLabel	Enhancement of Vibronic and Ground-State Vibrational Coherences in 2D Spectra of Photosynthetic Complexes Enhancement of Vibronic and Ground-State Vibrational Coherences in 2D Spectra of Photosynthetic Complexes (en)
skos:notation	RIV/00216208:11320/13:10189764!RIV14-GA0-11320___
http://linked.open...avai/predkladatel	Matematicko-fyzikální fakulta
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP205/10/0989)
http://linked.open...iv/cisloPeriodika	19. 6. 2013
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Mančal, Tomáš Chenu, Aurélia
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	72946
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10189764
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	exciton dynamics; quantum coherences; reaction centers; electronic coherence; energy-transfer; green sulfur bacteria; matthews-olson complex; resonance raman-spectra; light-harvesting complexes; 2-dimensional ir-spectroscopy (en)
http://linked.open.../riv/klicoveSlovo	2-dimensional ir-spectroscopy electronic coherence exciton dynamics light-harvesting complexes quantum coherences resonance raman-spectra energy-transfer green sulfur bacteria matthews-olson complex reaction centers
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[056AB3E744FB]
http://linked.open...i/riv/nazevZdroje	Scientific Reports
http://linked.open...in/vavai/riv/obor	BE
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Molecular Complexes as Open Quantum Systems: Delocalization, Decoherence, Dissipation, Photo-induced dynamics and Ultrafast Spectroscopy
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	3
http://linked.open...iv/tvurceVysledku	Mančal, Tomáš Christensson, Niklas Kauffmann, Harald F. Chenu, Aurélia
http://linked.open...ain/vavai/riv/wos	000320577000011
issn	2045-2322
number of pages	12 (xsd:int)
http://bibframe.org/vocab/doi	10.1038/srep02029
http://localhost/t...ganizacniJednotka	11320

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