Abstract
The insulating Mott state is formed due to repulsive electron–electron Coulomb interaction in the presence of the lattice (or in other words, due to electron–electron Umklapp processes). The second moment conductivity sum rule is derived, and it allows us to evaluate the strength of Umklapp scattering and the static electron–lattice energy. Mid-infrared spectra of current–current and density–density correlation functions in cuprates are suggested as evidence of strong Umklapp scattering.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
