Abstract
We applied a simple yet accurate self-consistent method using the density-functional formalism to study the field-emission properties of nanographite ribbons. We found some properties that are unique to nanostructure arrays, including the field-emission current being dominated by the contribution from off-zone-center $\ensuremath{\pi}$ states in some of the cases because of specific wave function symmetries, and an anomalous current density dependence on the inter-ribbons separation due to edge dipole effects. The applicability of Fowler-Nordheim analysis and some related problems are also discussed.
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