Faster and more efficient computer chips thanks to germanium

https://phys.org/news/2022-11-faster-efficient-chips-germanium.html

"perfect interfaces between aluminum contacts and silicon germanium components... silicon layer and silicon-germanium... heating... contact created between aluminum and silicon... 500 degrees C diffusion occurs... atoms leave... start to migrate. Silicon and germanium atoms move into aluminum contact.. aluminum fills vacated space... interface with silicon layer in between... oxygen atoms never have the opportunity to get to this atomically sharp and highly pure interface"