Electronic structure and localized states at carbon nanotube tips
作者： D. L. Carroll , P. Redlich , P. M. Ajayan , J. C. Charlier , X. Blase
DOI: 10.1103/PHYSREVLETT.78.2811
关键词: Band gap 、 Quasi Fermi level 、 Tight binding 、 Local density of states 、 Fermi level 、 Atomic physics 、 Carbon nanotube 、 Semimetal 、 Molecular physics 、 Materials science 、 Scanning tunneling spectroscopy
摘要: Topology related changes in the local density of states near ends closed carbon nanotubes are investigated using spatially resolved scanning tunneling spectroscopy and tight binding calculations. Sharp resonant valence band observed experiment at tube ends, dominating edge filling gap. Calculations show that strength position these with respect to Fermi level depend sensitively on relative positions pentagons their degree confinement ends.
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