title: Confined optical phonon modes in aligned nanorod arrays detected by resonant inelastic light scattering.
abstract: We investigated the optical phonon excitations of laterally aligned nanorod arrays by resonant Raman scattering. We observed a strong suppression of the surface-optical phonon modes in the closely packed aligned arrays and a small asymmetry in the longitudinal-optical phonon peak with respect to the rod alignment orientation. These observations can be explained by the spatial distribution of the potential of the different phonon modes derived from the first principles calculations.
authors.affiliation: National Nanotechnology Laboratory of CNR-INFM, Via per Arnesano, 73100 Lecce, Italy.
authors.forename: Concetta
authors.initials: C
authors.lastname: Nobile
authors.forename: Vladimir A
authors.initials: VA
authors.lastname: Fonoberov
authors.forename: Stefan
authors.initials: S
authors.lastname: Kudera
authors.forename: Antonio Della
authors.initials: AD
authors.lastname: Torre
authors.forename: Antonio
authors.initials: A
authors.lastname: Ruffino
authors.forename: Gerwin
authors.initials: G
authors.lastname: Chilla
authors.forename: Tobias
authors.initials: T
authors.lastname: Kipp
authors.forename: Detlef
authors.initials: D
authors.lastname: Heitmann
authors.forename: Liberato
authors.initials: L
authors.lastname: Manna
authors.forename: Roberto
authors.initials: R
authors.lastname: Cingolani
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Balandin
authors.forename: Roman
authors.initials: R
authors.lastname: Krahne