Weak Exciton Scattering in Molecular Nanotubes Revealed by Double-Quantum Two-Dimensional Electronic Spectroscopy

Darius Abramavicius; Alexandra Nemeth; Franz Milota; Jaroslaw Sperling; Shaul Mukamel; Harald Kauffmann

doi:10.1103/PhysRevLett.108.067401

Weak Exciton Scattering in Molecular Nanotubes Revealed by Double-Quantum Two-Dimensional Electronic Spectroscopy

Darius Abramavicius (Corresponding author), Alexandra Nemeth, Franz Milota, Jaroslaw Sperling, Shaul Mukamel, Harald Kauffmann

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Abstract

The two-exciton manifold of a double-wall cylindrical molecular aggregate is studied using a coherent third order optical technique. Experiments reveal the anharmonic character of the exciton bands. Atomistic simulations of the exciton-exciton scattering show that the excitons can be treated as weakly coupled hard-core bosons. The weak coupling stems from the extended exciton delocalization made possible by the nanotube geometry.

Original language	English
Article number	067401
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review Letters
Volume	108
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.108.067401
Publication status	Published - 2012

Austrian Fields of Science 2012

104017 Physical chemistry
103018 Materials physics

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10.1103/PhysRevLett.108.067401

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AU - Mukamel, Shaul

AU - Kauffmann, Harald

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Weak Exciton Scattering in Molecular Nanotubes Revealed by Double-Quantum Two-Dimensional Electronic Spectroscopy

Abstract

Austrian Fields of Science 2012

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