Statistical analysis of the electronic structure of single-wall carbon nanotubes

Citation
I. Wirth et al., Statistical analysis of the electronic structure of single-wall carbon nanotubes, PHYS REV B, 61(8), 2000, pp. 5719-5723
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
10980121 → ACNP
Volume
61
Issue
8
Year of publication
2000
Pages
5719 - 5723
Database
ISI
SICI code
1098-0121(20000215)61:8<5719:SAOTES>2.0.ZU;2-0
Abstract
The electronic structure of single-wall nanotubes in intact, undissolved "b uckypaper'' has been studied using scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS) at 23 K. STM topography shows, that s ingle-wall carbon nanotubes (SWNT's) form microbundles that in turn aggrega te in ropes. STS allows us to distinguish between room temperature metallic and wide-gap SWNT's. We find a distribution ratio of (49+/-7)%:(51+/-7)%, respectively. A statistical analysis of the observed band gaps and metallic plateaus within these groups is carried out and used to determine the diam eter distribution of the SWNT's in the buckypaper.