Distinguishing Electronic and Vibronic Coherence in 2D Spectra by Their Temperature Dependence

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10284705" target="_blank" >RIV/00216208:11320/14:10284705 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/jz402468c" target="_blank" >http://dx.doi.org/10.1021/jz402468c</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/jz402468c" target="_blank" >10.1021/jz402468c</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Distinguishing Electronic and Vibronic Coherence in 2D Spectra by Their Temperature Dependence

Popis výsledku v původním jazyce

Long-lived oscillations in 2D spectra of chlorophylls are at the heart of an ongoing debate. Their physical origin is either a multipigment effect, such as excitonic coherence, or localized vibrations. We show how relative phase differences of diagonal-and cross-peak oscillations can distinguish between electronic and vibrational (vibronic) effects. While direct discrimination between the two scenarios is obscured when peaks overlap, their sensitivity to temperature provides a stronger argument. We show that vibrational (vibronic) oscillations change relative phase with temperature, while electronic oscillations are only weakly dependent. This highlights that studies of relative phase difference as a function of temperature provide a clear and easilyaccessible method to distinguish between vibrational and electronic coherences.

Název v anglickém jazyce

Distinguishing Electronic and Vibronic Coherence in 2D Spectra by Their Temperature Dependence

Popis výsledku anglicky

Long-lived oscillations in 2D spectra of chlorophylls are at the heart of an ongoing debate. Their physical origin is either a multipigment effect, such as excitonic coherence, or localized vibrations. We show how relative phase differences of diagonal-and cross-peak oscillations can distinguish between electronic and vibrational (vibronic) effects. While direct discrimination between the two scenarios is obscured when peaks overlap, their sensitivity to temperature provides a stronger argument. We show that vibrational (vibronic) oscillations change relative phase with temperature, while electronic oscillations are only weakly dependent. This highlights that studies of relative phase difference as a function of temperature provide a clear and easilyaccessible method to distinguish between vibrational and electronic coherences.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BE - Teoretická fyzika

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP205%2F10%2F0989" target="_blank" >GAP205/10/0989: Molekulární komplexy jako otevřené kvantové systémy: delokalizace, dekoherence, disipace, fotoindukovaná dynamika a ultrarychlá spektroskopie</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physical Chemistry Letters

ISSN

1948-7185

e-ISSN

—

Svazek periodika

5

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

404-407

Kód UT WoS článku

000331153600001

EID výsledku v databázi Scopus

—