The interface optical phonon and electron-phonon interaction in GaN/AlN spherical heterostructuresW. D. Huang, Y. J. Ren, S. Y. Wei and J. H. WangEur. Phys. J. Appl. Phys., 43 1 (2008) 73-77DOI: https://doi.org/10.1051/epjap:2008127