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

Autor(en)
Darius Abramavicius, Alexandra Nemeth, Franz Milota, Jaroslaw Sperling, Shaul Mukamel, Harald Kauffmann
Abstrakt

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.

Organisation(en)
Institut für Physikalische Chemie, Elektronische Materialeigenschaften
Externe Organisation(en)
Jilin University, Newport Spectra-Physics Gmbh, University of California, Irvine
Journal
Physical Review Letters
Band
108
Seiten
1-5
Anzahl der Seiten
5
ISSN
0031-9007
DOI
https://doi.org/10.1103/PhysRevLett.108.067401
Publikationsdatum
2012
Peer-reviewed
Ja
ÖFOS 2012
104017 Physikalische Chemie, 103018 Materialphysik
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/f0767b55-ac78-41bc-9765-eb7a6b88b9b3