title: Hidden one-electron interactions in carbon nanotubes revealed in graphene nanostrips.
abstract: Many single-wall carbon nanotube (SWNT) properties near the Fermi level were successfully predicted using a nearest-neighbor tight-binding model characterized by a single parameter, V1. We show however that this model fails for armchair-edge graphene nanostrips due to interactions directly across hexagons. These same interactions are found largely hidden in the description of SWNTs, where they renormalize V1 leaving previous nearest-neighbor model SWNT results largely intact while resolving a long-standing puzzle regarding the magnitude of V1.
authors.affiliation: Chemistry Division, Naval Research Laboratory, Washington, DC 20375, USA. carter.white@nrl.navy.mil
authors.forename: Carter T
authors.initials: CT
authors.lastname: White
authors.forename: Junwen
authors.initials: J
authors.lastname: Li
authors.forename: Daniel
authors.initials: D
authors.lastname: Gunlycke
authors.forename: John W
authors.initials: JW
authors.lastname: Mintmire