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Local Electronic Structure in Ordered Aggregates of Carbon Nanotubes: Scanning Tunneling Microscopy/scanning Tunneling Spectroscopy Study

Published online by Cambridge University Press:  31 January 2011

D. L. Carroll ,
P. M. Ajayan  and
S. Curran
D. L. Carroll
Affiliation:
Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634
P. M. Ajayan
Affiliation:
Department of Materials Science & Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180–3590
S. Curran
Affiliation:
Department of Physics, Trinity College Dublin, Dublin, Ireland
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Abstract

The recent application of tunneling probes in electronic structure studies of carbon nanotubes has proven both powerful and challenging. Using scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS), local electronic properties in ordered aggregates of carbon nanotubes (multiwalled nanotubes and ropes of single walled nanotubes) have been probed. In this report, we present evidence for interlayer (concentric tube) interactions in multiwalled tubes and tube-tube interactions in singlewalled nanotube ropes. The spatially resolved, local electronic structure, as determined by the local density of electronic states, is shown to clearly reflect tube-tube interactions in both of these aggregate forms.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 9 , September 1998 , pp. 2389 - 2395
Copyright
Copyright © Materials Research Society 1998

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