Biexciton stability in carbon nanotubes

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We have applied the quantum Monte Carlo method and tight-binding modelling to calculate the binding energy of biexcitons in semiconductor carbon nanotubes for a wide range of diameters and chiralities. For typical nanotube diameters we find that biexciton binding energies are much larger than previously predicted from variational methods, which easily brings the biexciton binding energy above the room temperature threshold.
revtex4, final, twocolumn. to be published in Phys.Rev.Let. 5 pages 3 figures

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Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/138467

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0708.4106
 http://arxiv.org/abs/0708.4106
 Phys. Rev. Lett. 99, 126806 (2007)
 doi:10.1103/PhysRevLett.99.126806

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arXiv