Note 2 things. a) It's a *theoretical* material. b) It's only perfect till it gets to a *connector*
No one has made 2D Sn, much less 2D Sn funtionalised with Florine.
However Mercury Telluride has been made (I think it was used in IR detectors but better materials exist) and seems to verify the theory, or at least part of it. I'm not sure if that included the 1 atom thick layer thing.
The trouble with these calculated materials is the calcs are complex and approximations used. So the effect works great in a perfect lattice but IRL....
But what happens when you want to tap the flow and direct an electron flow (I know, lets call it a "current") into something more useful?
No mention of what happens at that point.
Thing is if this is a perfect conductor then (by definition) all else is imperfect, so there's a discontinuity interface. "Stuff" happens at such interfaces (typically rectification in semiconductors). Rapid heating as electrons "bunch up"? Infinite impedance IE no electrons exit the material?
B**gered if I know.
And note also 100% efficiency <> infinite capacity. At some point the # of electrons you're injecting into the layer exceeds a threshold and "stuff" happens (again). What's the threshold, what's the effect? See previous comment.
IRL on chip conductor layers have holes punched in them to allow signals (including power) to contact the processing layer from above. IIRC (I'm not current) this is at least 8 layers.
So I'd call it V 0.05 tech at best. Lots of potential but that's about it at present.