title: Specific Raman signatures of a dimetallofullerene peapod.
abstract: We report on the Raman spectroscopy of a dimetallofullerene peapod, (La(2)@C(80))(m)@SWNT. Drastic changes are observed with respect to pristine nanotubes. A sharp intense line at 142 cm(-1) is interpreted as a signature of polymerization of the encapsulated metallofullerenes. Additional strong signatures appear at about 400, 520, and 640 cm(-1), respectively. Their intensity suggests the existence of an enhancement effect. The stiffening and the up-shift of the G-band modes appear to imply that a charge transfer process between the nanotube and the peas occurs.
authors.affiliation: Laboratoire Aimé Cotton, CNRS, Bâtiment 505, 91405 Orsay cédex, France.
authors.forename: A
authors.initials: A
authors.lastname: Débarre
authors.forename: R
authors.initials: R
authors.lastname: Jaffiol
authors.forename: C
authors.initials: C
authors.lastname: Julien
authors.forename: D
authors.initials: D
authors.lastname: Nutarelli
authors.forename: A
authors.initials: A
authors.lastname: Richard
authors.forename: P
authors.initials: P
authors.lastname: Tchénio