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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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Scanning tunneling spectroscopy of a semiconducting heterojunction nanotube on the Au(111) surface

Cited 3 times inthomson ciCited 3 times inthomson ci
Title
Scanning tunneling spectroscopy of a semiconducting heterojunction nanotube on the Au(111) surface
Author
Kim, HajinLee, JLee, SSong, YJChoi, BYKuk, YKahng, SJ
Keywords
Carbon nanotube; Scanning tunneling microscope
Issue Date
200505
Publisher
ELSEVIER SCIENCE BV
Citation
SURFACE SCIENCE, v.581, no.2-3, pp.241 - 245
Abstract
The atomic and electronic structures of a single-wall carbon nanotube prepared on the Au(1 1 1) surface was studied. We performed scanning tunneling spectroscopy measurement in a semiconducting nanotube heterojunction, obtaining the local electronic density of states. An interface state was observed within the energy gaps of the semiconducting nanotubes. The interface state is spatially localized within a few nm scales and decays into the two semiconducting CNTs with unequal screening lengths. The interface state is donor-like, possibly originating from a heptagonal atomic structure. The interface state is well-understood, in analogy with that of a conventional semiconductor heterojunction.
URI
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DOI
http://dx.doi.org/10.1016/j.susc.2005.03.001
ISSN
0039-6028
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