Ytterbium Monolayer Diffusion Barriers at Hg(1-x)CD(x)Te/Al Junctions

摘要

Single layers of Yb at the Hg1-xCdxTe(110)/A1 interface prevent A1-Te reaction and dramatically increase the Hg concentration at the interface. The interlayer-induced change in atomic interdiffusion results in an increase of over two orders of magnitude in the Hg/Te ratio in the junction region. Semi-empirical calculations of thermodynamic parameters following Miedema's model suggest that other rare earths should also act as effective diffusion barriers at Hg2-XCdXTe/reactive metal junctions.