A. Balzarotti et al., MORPHOLOGY OF THE FE, CR AND GE BI2SR2CACU2O8 REACTIVE INTERFACES FROM XPS AND STM ANALYSES, Physica. C, Superconductivity, 235, 1994, pp. 1011-1012
We describe through a phenomenological model the reactive interface fo
rmation between Bi2Sr2CaCu2O8 and Fe, Cr and Ge overlayers. Adatom clu
stering, surface chemical reaction and diffusion of the reacted specie
s have been evidenced by core level emission spectroscopy (XPS) and sc
anning tuneling microscopy (STM).