Investigations of electronic structure of capped carbon nanotubes by scanning tunneling spectroscopy

Authors
Klusek, Z Kowalczyk, P Byszewski, P
Citation
Z. Klusek et al., Investigations of electronic structure of capped carbon nanotubes by scanning tunneling spectroscopy, VACUUM, 63(1-2), 2001, pp. 145-150
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
VACUUM
ISSN journal
0042207X → ACNP
Volume
63
Issue
1-2
Year of publication
2001
Pages
145 - 150
Database
ISI
SICI code
0042-207X(20010702)63:1-2<145:IOESOC>2.0.ZU;2-9
Abstract
Scanning tunneling microscopy and spectroscopy have been used to observe th e variations of electronic structure along capped carbon nanotubes deposite d on freshly cleaved HOPG(0001) surface. The electronic structure has been derived from measured dependence of tunneling conductance dI/dV with applie d voltage. Evolution of dI/dV(V) along the nanotube suggests a change of co nductivity from semiconducting to metallic as the cap is approaching. The e xperiments are discussed in terms of existing theories of nanotubes and qua ntum chemistry calculations. (C) 2001 Elsevier Science Ltd. All rights rese rved.