Confined optical phonon modes in aligned nanorod arrays detected by resonant inelastic light scattering

被引：40

作者：

Nobile, Concetta

Fonoberov, Vladimir A.

Kudera, Stefan

Della Torre, Antonio

Ruffino, Antonio

Chilla, Gerwin

Kipp, Tobias

Heitmann, Detlef

Manna, Liberato

Cingolani, Roberto

Balandin, Alexander A.

Krahne, Roman

机构：

[1] CNR, INFM, Natl Nanotechnol Lab, I-73100 Lecce, Italy

[2] Univ Calif Riverside, Dept Elect Engn, Riverside, CA 92521 USA

[3] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany

来源：

NANO LETTERS | 2007年 / 7卷 / 02期

关键词：

D O I：

10.1021/nl062818+

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

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页码：476 / 479

页数：4

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