Understandably, there is extreme skepticism surrounding the two papers, including from their own authors. Sukbae Lee, one of the authors, stated that another author, Professor Kwon, published their experiments on the pre-print server Arxiv without consulting the other authors, and before they had been properly written, leading to skeptics in the broader community calling some of the data "sloppy" and "fishy." With that extraordinary caveat in place, let's take a look at their findings. The team identified a lead-based compound called LK-99 which is supposedly a superconductor.