Phys. Rev. Lett. 96, 057407 (2006) [4 pages]Quantized Bimolecular Auger Recombination of Excitons in Single-Walled Carbon NanotubesReceived 11 March 2005; published 9 February 2006 Auger-like exciton-exciton annihilation in isolated single-walled carbon nanotubes (SWNTs) has been studied by femtosecond transient absorption spectroscopy. We observe a quantization of the Auger recombination process and extract dynamics for 2 and 3 electron-hole pair excited states. We further demonstrate that Auger recombination in SWNTs is a two-particle process involving strongly bound excitons and not a three-particle Auger process involving unbound electrons and holes. We thus provide explicit experimental evidence for one-dimensional discrete excitons in SWNTs. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.057407
DOI:
10.1103/PhysRevLett.96.057407
PACS:
78.67.Ch, 78.47.+p
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