title: Biexciton stability in carbon nanotubes.
abstract: We have applied the quantum Monte Carlo method and tight-binding modeling 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.
authors.affiliation: CNR-INFM Research Center for nanoStructures and bioSystems at Surfaces (S3), Via Campi 213/A, 41100 Modena, Italy. david.kammerlander@unimore.it
authors.forename: David
authors.initials: D
authors.lastname: Kammerlander
authors.forename: Deborah
authors.initials: D
authors.lastname: Prezzi
authors.forename: Guido
authors.initials: G
authors.lastname: Goldoni
authors.forename: Elisa
authors.initials: E
authors.lastname: Molinari
authors.forename: Ulrich
authors.initials: U
authors.lastname: Hohenester