Disclosed are methods for facilitating concurrent formation of copper vias
and memory element structures. The methods involve forming vias over
metal lines and forming copper plugs, wherein the copper plugs comprise
memory element film forming copper plugs (memE copper plugs) and
non-memory element forming copper plugs (non-memE copper plugs), forming
a tantalum-containing cap over an upper surface of non-memE copper plugs,
and depositing memory element films. The tantalum-containing cap prevents
the formation of the memory element films in the non-memE copper plugs.
The subject invention advantageously facilitates cost-effective
manufacturing of semiconductor devices.