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Kim, Hajin
Single Molecule Biophysics Lab
Research Interests
  • Biophysics, Single Molecule, fluorescence Spectroscopy, biological Motors, biomolecular assembly

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Local electronic density of states of a semiconducting carbon nanotube interface

Cited 11 times inthomson ciCited 10 times inthomson ci
Title
Local electronic density of states of a semiconducting carbon nanotube interface
Author
Kim, HajinLee, JhinhwanLee, SungjunKuk, YoungPark, Ji-YoungKahng, Se-Jong
Keywords
SCANNING TUNNELING SPECTROSCOPY; INTRAMOLECULAR JUNCTIONS
Issue Date
200506
Publisher
AMERICAN PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v.71, no.23, pp.235402 -
Abstract
The local electronic structure of semiconducting single-wall carbon nanotubes was studied with scanning tunneling microscopy. We performed scanning tunneling spectroscopy measurement at selected locations on the center axis of carbon nanotubes, acquiring a map of the electronic density of states. Spatial oscillation was observed in the electronic density of states with the period of atomic lattice. Defect induced interface states were found at the junctions of the two semiconducting nanotubes, which are well-understood in analogy with the interface states of bulk semiconductor heterostructures. The electronic leak of the van Hove singularity peaks was observed across the junction, due to inefficient charge screening in a one-dimensional structure.
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DOI
http://dx.doi.org/10.1103/PhysRevB.71.235402
ISSN
2469-9950
Appears in Collections:
SLS_Journal Papers
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