Thanks for the response, I'm under the impression that the band gap exists in a region whereby bands don't overlap or in other words where the density of states is 0. So to some degree what you're saying must be an extension of this principle?
Considering the fermi level for a chain of F+ I...
If we prepare a chain of flourine atoms: F-F-F-F-F-F-F-F-F-F-F-F-F-F-F-F-F-F-F we can construct the band structure shown. I'm using flourine as an example but my question can be generalized: What do we know about the conductivity of a material (such as this 1D chain) when the fermi level lies in...