Superradiance at the localization-delocalization crossover in tubular chlorosomes

Superradiance at the localization-delocalization crossover in tubular chlorosomes

We study the effect of disorder on spectral properties of tubular chlorosomes in green sulfur bacteria Cf. aurantiacus. Employing a Frenkel-exciton Hamiltonian with diagonal and off-diagonal disorder consistent with spectral and structural studies, we analyze excitonic localization and spectral stat...

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Bibliographic Details
Main Authors: Molina, Rafael A., Benito-Matías, Enrique, Somoza, Alejandro D., Chen, Lipeng, Zhao, Yang
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2018
Subjects:
Superradiance
Frenkel Excitons
DRNTU::Engineering::Materials
Online Access:https://hdl.handle.net/10356/80441
http://hdl.handle.net/10220/46543
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Institution: Nanyang Technological University
Language: English
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Summary:We study the effect of disorder on spectral properties of tubular chlorosomes in green sulfur bacteria Cf. aurantiacus. Employing a Frenkel-exciton Hamiltonian with diagonal and off-diagonal disorder consistent with spectral and structural studies, we analyze excitonic localization and spectral statistics of the chlorosomes. A size-dependent localization-delocalization crossover is found to occur as a function of the excitonic energy. The crossover energy region coincides with the more optically active states with maximized superradiance and is, consequently, more conducive for energy transfer.

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