Coupled study by TEM/EELS and STM/STS of electronic properties of C- and CNx-nanotubes

Lin, H. ; Lagoute, J. ; Repain, V. ; Chacon, C. ; Girard, Y. ; Lauret, J.S. ; Arenal, R. ; Ducastelle, F. ; Loiseau, A. ; Rousset, S.

Resumen: Carbon nanotubes are the focus of considerable research efforts due to their fascinating physical properties. They provide an excellent model system for the study of one-dimensional materials and molecular electronics. The chirality of nanotubes can lead to very different electronic behaviour, either metallic or semiconducting. Their electronic spectrum consists of a series of Van Hove singularities defining a bandgap for semiconducting tubes and molecular orbitals at the corresponding energies. A promising way to tune the nanotubes electronic properties for future applications is to use doping by heteroatoms. Here we report on the experimental investigation of the role of many-body interactions in nanotube bandgaps, the visualization in direct space of the molecular orbitals of nanotubes and the properties of nitrogen doped nanotubes using scanning tunneling microscopy and transmission electron microscopy as well as electron energy loss spectroscopy.

Idioma: Inglés

DOI: 10.1016/j.crhy.2011.10.013

Año: 2011

Publicado en: COMPTES RENDUS PHYSIQUE 12, 9-10 (2011), 909-920
ISSN: 1631-0705

Factor impacto JCR: 1.36 (2011)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 31 / 82 = 0.378 (2011) - Q2 - T2
Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 32 / 56 = 0.571 (2011) - Q3 - T2

Tipo y forma: Article (PrePrint)