Terrific summary so far.
It further has more American scientists (Northwestern University and University of Colorado Boulder) verifying the simulations and that the model seems to be legit. At least it all lines up consistently.
What's crazy is how much the method of synthesis matters to small details.
Imagine if you get the ingredients and instructions to make a pie, but because you stirred one part counter-clockwise instead of clockwise you get a lemon pie instead of a strawberry pie that you were going for.
That means the synthesis method will determine whether or not you can get the copper atoms right into the correct alignment/pockets/sites for it to work. You basically have a lead and copper compound, but the copper atoms need to replace the lead atoms at the correct sites.
Like I mentioned earlier the gold substitute for copper seems to be working well and I'm pretty sure they'll find different combinations that will replicate the same effect maybe even better and easier, especially with A.I tools once we know what we're looking for.
Now everyone is trying to troubleshoot this thing and find the most reliable way to synthesize so that we get closer and closer to a conclusion based on a very promising discovery.