H. Sirringhaus et al., HOT-CARRIER SCATTERING AT INTERFACIAL DISLOCATIONS OBSERVED BY BALLISTIC-ELECTRON-EMISSION MICROSCOPY, Physical review letters, 73(4), 1994, pp. 577-580
In situ ballistic-electron-emission microscopy (BEEM) has been perform
ed at 77 K on partially strain-relaxed, epitaxial CoSi2/Si(111) films
grown by molecular beam epitaxy. Hot electron scattering at individual
interfacial dislocations has been observed for the first time by BEEM
. Standing wave formation in the metal and changes of the surface elec
tronic structure give rise to significant contrast in BEEM images. Apa
rt from the dislocation- and surface-induced contrast, the interfacial
transmission is generally found to be homogeneous.