Abstract
The linear optical properties of semiconducting
carbon nanotubes are dominated by quasi-one-dimensional excitons formed by
single electron-hole pairs. Hence, the nonlinear response at high pump levels
most likely leads to the formation of exciton complexes involving several
electron-hole pairs. Such complexes would threfore play an important role in
e.g. lasing applications. We demonstrate here that the biexciton complex is
surprisingly stable for nanotubes in a wide diameter range. Theoretical
predictions for the signature of such states in pump-probe spectroscopy are
presented.
Original language | English |
---|---|
Journal | Nano Letters |
Volume | 5 |
Issue number | 2 |
Pages (from-to) | 291-294 |
ISSN | 1530-6984 |
DOIs | |
Publication status | Published - 2005 |