In-depth analysis of the interfaces in InGaP/GaAs heterosystems C. Pelosi, G. Attolini, C. Frigeri, M. Bersani, D. Giubertoni, L. Vanzetti and R. Kudela Eur. Phys. J. Appl. Phys., 27 1-3 (2004) 379-383 Published online: 15 July 2004 DOI: 10.1051/epjap:2004143