Hidden One-Electron Interactions in Carbon Nanotubes Revealed in Graphene Nanostrips
- 13 February 2007
- journal article
- research article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 7 (3) , 825-830
- https://doi.org/10.1021/nl0627745
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.Keywords
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