Raman measurement of vertical conductivity and localization effects in strongly coupled semiconductor periodical structures - Pusep, Yuri A; Silva, M T O; Galzerani, J C; Rodrigues, S C P; Scolfaro, Luisa Maria Ribeiro; Lima, A. P.; Quivy, Alain André; Leite, J. R.; Moshegov, N T; Basmaji, P (Journal of Applied Physics, 2000)