Given the ingredients have known semiconducting properties one would think they'd run it through the wringer to expel any doubts as to its superconducting prope

Given the ingredients have known semiconducting properties one would think they'd run it through the wringer to expel any doubts as to its superconducting properties. 2DEGs and such at room temp are common, GaN transistors do it and they have well known temperature dependent resistance characteristics. The semiconductor characterization people at any fab could really get to the bottom of this.