Stacking faults in heavily nitrogen doped 4H-SiC K. Irmscher, J. Doerschel, H. -J. Rost, D. Schulz, D. Siche, M. Nerding and H. P. Strunk Eur. Phys. J. Appl. Phys., 27 1-3 (2004) 243-246 Published online: 15 July 2004 DOI: 10.1051/epjap:2004057