Propagating optical phonons and their properties in GaN/AlN quantum wellsW. D. Huang, Y. J. Ren, J. F. Yan, Q. Wu and S. H. ZhangEur. Phys. J. Appl. Phys., 54 1 (2011) 11301DOI: https://doi.org/10.1051/epjap/2010100340