title: Raman spectra of double-wall carbon nanotubes under extreme uniaxial stress.
abstract: We investigated the pressure dependence of the Raman frequencies and intensities of the D and G bands of double-wall carbon nanotubes under strong uniaxial conditions. Using moissanite anvils, we observed for the first time the evolution of the D band under extreme stress/pressure conditions. We find that the difference between D and G frequencies remains constant over the whole stress range. In addition, we observe that double-wall carbon nanotubes behave elastically up to the maximum uniaxial stress reached in our experiments, which is estimated to be about 12 GPa.
authors.affiliation: MALTA CONSOLIDER Team, Departamento de Quimica Fisica I, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, 28040-Madrid, Spain.
authors.forename: Elena
authors.initials: E
authors.lastname: del Corro
authors.forename: Jesús
authors.initials: J
authors.lastname: González
authors.forename: Mercedes
authors.initials: M
authors.lastname: Taravillo
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Flahaut
authors.forename: Valentín G
authors.initials: VG
authors.lastname: Baonza