Biexciton stability in carbon nanotubes

Details Biexciton stability in carbon nanotubes Biexciton stability in carbon nanotubes

2007-08-30

arxiv.org/abs/0708.4106v1

Phys. Rev. Lett. 99, 126806 (2007)

Physics

Condensed Matter

Materials Science

revtex4, final, twocolumn. to be published in Phys.Rev.Let. 5 pages 3 figures

Scientific paper

10.1103/PhysRevLett.99.126806

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.

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