Confined optical phonon modes in aligned nanorod arrays detected by resonant inelastic light scattering.
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.
Nobile
Concetta
C
National Nanotechnology Laboratory of CNR-INFM, Via per Arnesano, 73100 Lecce, Italy.
Fonoberov
Vladimir A
VA
Kudera
Stefan
S
Torre
Antonio Della
AD
Ruffino
Antonio
A
Chilla
Gerwin
G
Kipp
Tobias
T
Heitmann
Detlef
D
Manna
Liberato
L
Cingolani
Roberto
R
Balandin
Alexander A
AA
Krahne
Roman
R