The energy gap of carbon clusters studied by scanning tunneling spectroscopy

Authors
Lonfat, M Marsen, B Sattler, K
Citation
M. Lonfat et al., The energy gap of carbon clusters studied by scanning tunneling spectroscopy, CHEM P LETT, 313(3-4), 1999, pp. 539-543
Citations number
23
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
313
Issue
3-4
Year of publication
1999
Pages
539 - 543
Database
ISI
SICI code
0009-2614(19991112)313:3-4<539:TEGOCC>2.0.ZU;2-L
Abstract
Electronic properties of carbon clusters with diameters d between 4 and 110 0 Angstrom were studied by scanning tunneling spectroscopy (STS), Large-siz ed clusters all showed the zero band gap of graphite. A gap opening was obs erved for clusters with diameters less than about 15 Angstrom. Energy gaps up to 650 meV were measured. The experimental results were modeled using a finite barrier potential for confined electrons, with consideration of the effective mass. (C) 1999 Elsevier Science B.V. All rights reserved.