A 1996 theory by UCR’s Chandra Varma notes that in copper oxide materials superconductivity is associated with the formation of a new state of matter in which electric current loops form spontaneously, going from copper to oxygen atoms and back to copper. Recently, a French-German team of experimental scientists directly observed the current loops.
A microscopic theory of high temperature superconductivity might also suggest ways of fabricating room temperature superconductors, possibly with materials more amenable to industrial fabrication than the cuprates.
The results of the specific approach needs to be checked by another neutron group. More refined experiments need to be designed to improve the data and verify the theory in more detail.