Single atom spectroscopy with reduced delocalization effect using a 30 kV-STEM K. Suenaga, Y. Iizumi and T. Okazaki Eur. Phys. J. Appl. Phys., 54 3 (2011) 33508 Published online: 09 June 2011 DOI: 10.1051/epjap/2011100414