The electrical activity of IMPATT diodes on a nanometric scale by X-STEBIC method H. Maya, C. Cabanel, J.-Y. Laval, L. Peymayeche, A. de Lustrac and F. Bouillaut Eur. Phys. J. AP, 10 1 (2000) 43-51 Published online: 15 April 2000 DOI: 10.1051/epjap:2000118