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.
@article{arxiv.0807.0844,
title = {Surface optical Raman modes in InN nanostructures},
author = {Satyaprakash Sahoo and M. S. Hu and C. W. Hsu and C. T. Wu and K. H. Chen and L. C. Chen and A. K. Arora and S. Dhara},
journal= {arXiv preprint arXiv:0807.0844},
year = {2009}
}