Using the quick search there are shown up to three reports about superconducting materials:
One major goal on the path toward making useful superconducting devices has been engineering materials that act as superconductors at the nanoscale — the realm of billionths of a meter. Such nanoscale...
Energie und Elektrotechnik |Using the fulltext-search for the word superconducting materials you can set up serveral searching-options > choose search options