Phys. Rev. Lett. 90, 057404 (2003) [4 pages]Ultrafast Carrier Dynamics in Single-Wall Carbon NanotubesReceived 19 July 2002; published 5 February 2003 Time-resolved carrier dynamics in single-wall carbon nanotubes is investigated by means of two-color pump-probe experiments. The recombination dynamics is monitored by probing the transient photobleaching observed on the interband transitions of the semiconducting tubes. This dynamics takes place on a 1 ps time scale which is 1 order of magnitude slower than in graphite. Transient photoinduced absorption is observed for nonresonant probing and is interpreted as a global redshift of the π-plasmon resonance. We show that the opening of the band gap in semiconducting carbon nanotubes determines the nonlinear response dynamics over the whole visible and near-infrared spectrum. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.057404
DOI:
10.1103/PhysRevLett.90.057404
PACS:
78.67.Ch, 42.65.–k, 78.47.+p
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