Non-Fermi behavior of the disorder electronic system
C. P. Moca, I. Tifrea, M. Crisan
Abstract
We showed that an electronic system with weak disorder considered in the finite-charge infinite U Hubbard model can present a non-Fermi behavior. The imaginary pert of the self-energy has been calculated and a linear temperature dependence was obtained. This result is in agreement with the non-Fermi behavior observed at the insulator-metal crossover in La2-xSrxCuO4.
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