Can’t wait to get my first pair of superconducting strontium ruthenate cables. It may take a decade or so, but it will be the most revealing cable imaginable.
Copper, gallium, graphene and excitation "demons"
...and the next round of cables?
"the research suggests that metals and other materials are teeming with weird vibrations that physicists lack the instrumentation to understand."
https://www.wired.com/story/an-invisible-demon-lurks-in-an-odd-superconductor/