Greene and Mason also mention some graph inconsistencies that make it hard to discern if this material is even a superconductor at all.
“I think one thing that’s exciting about this paper is that they were very clear about how they made the material. It’s a material that many people can make and reproduce,” Mason says, but he also points out a few red flags. “The resistivity plot is troublesome to me … if you took their plot of a superconductor, and just put gold on the same plot, gold would look like there was also zero resistance.”