Asymptotic exchange coupling of quasi-1D excitons in carbon nanotubes

Abstract

An analytical expression is obtained for the biexciton binding energy as a function of the inter-exciton distance and binding energy of constituent quasi-one-dimensional excitons in carbon nanotubes. This allows one to trace biexciton energy variation and relevant non-linear absorption under external conditions whereby the exciton binding energy varies. The non-linear absorption lineshapes calculated exhibit characteristic asymmetric (Rabi) splitting as the exciton energy is tuned to the nearest interband plasmon resonance. These results are useful for tunable optoelectronic device applications of optically excited semiconducting carbon nanotubes, including the strong excitation regime with optical non-linearities.

4 pages, 3 figures. Text and figures updated. References added

References in corpus (8)

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• Complexes of dipolar excitons in layered quasi-two-dimensional nanostructures
• Collective Excitations and Optical Response of Ultrathin Carbon Nanotube Films
• Possibility for exciton Bose-Einstein condensation in carbon nanotubes
• Relative stability of excitonic complexes in quasi-one-dimensional semiconductors
• On Binding Energy of Trions in Bulk Materials
• Crystal Phases of Charged Interlayer Excitons in van der Waals Heterostructures
• Controlled Exciton-Plasmon Coupling in a Mixture of Ultrathin Periodically Aligned Single-Wall Carbon Nanotube Arrays
• Configuration space method for calculating binding energies of exciton complexes in quasi-1D/2D semiconductors
• Trions and biexcitons in a nanowire
• Magnetoexcitons in phosphorene monolayers, bilayers, and van der Waals heterostructures