- #1
dRic2
Gold Member
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The concepts of bands is a useful tool in describing electrons in solids, but as far as I understand it arises naturally only when the real interacting system of electrons can be mapped with a very good approximation to an independent-particles problem (a mean-field approximation). If I have strongly correlated material the correlation length is very big and standard mean-field methods begin to fail. In such a particular case do scientists keep talking about bands ?
Thanks
Ric
Thanks
Ric