Open AccessDetection of a Biexciton in Semiconducting Carbon Nanotubes Using Nonlinear Optical Spectroscopy
Author(s) -
Léo Colombier,
Julien Sellés,
Emmanuel Rousseau,
JeanSébastien Lauret,
Fabien Vialla,
Christophe Voisin,
G. Cassabois
Publication year - 2012
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.109.197402
Subject(s) - biexciton , exciton , annihilation , spectroscopy , binding energy , carbon nanotube , chirality (physics) , physics , condensed matter physics , materials science , atomic physics , molecular physics , fano plane , resonance (particle physics) , nanotechnology , quantum mechanics , chiral symmetry breaking , quark , nambu–jona lasinio model , mathematics , pure mathematics
International audienceWe report the observation of the biexciton in semiconducting single-wall carbon nanotubes by means of nonlinear optical spectroscopy. Our measurements reveal the universal asymmetric line shape of the Fano resonance intrinsic to the biexciton transition. For nanotubes of the (9,7) chirality, we find a biexciton binding energy of 106 meV. From the calculation of the χ(3) nonlinear response, we provide a quantitative interpretation of our measurements, leading to an estimation of the characteristic Fano factor q of 7±3. This value allows us to extract the first experimental information on the biexciton stability and we obtain a biexciton annihilation rate comparable to the exciton-exciton annihilation one
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