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