If you’re comfortable with band structure, I’d recommend looking into the states that arise in flat band systems e.g. quantum Hall states and spin liquids. Otherwise, you can read some electronic structure books to get a sense of how flat band systems differ from the traditional approach. I recommend John Singleton’s book from the Oxford series.
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.
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.