Read the article - unfortunately i don’t know enough about flatband materials. So i don’t know what benefits this discovery may have. What is a good place to start to learn more about that?
As an aside, it’s a lot like how people talk about non-Fermi liquids (nFLs). The positive definition of nFL is hard to come by in texts, so when someone talks about nFL behavior, you have to ask them what measurement/model they are studying.