Surface optical Raman modes in InN nanostructures

Details Surface optical Raman modes in InN nanostructures Surface optical Raman modes in InN nanostructures

2008-07-05

arxiv.org/abs/0807.0844v1

Physics

Condensed Matter

Materials Science

13 pages, 4 figures, Submitted in Journal

Scientific paper

10.1063/1.3040681

Raman spectroscopic investigations are carried out on one-dimensional nanostructures of InN,such as nanowires and nanobelts synthesized by chemical vapor deposition. In addition to the optical phonons allowed by symmetry; A1, E1 and E2(high) modes, two additional Raman peaks are observed around 528 cm-1 and 560 cm-1 for these nanostructures. Calculations for the frequencies of surface optical (SO) phonon modes in InN nanostructures yield values close to those of the new Raman modes. A possible reason for large intensities for SO modes in these nanostructures is also discussed.

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