Non-Fermi liquid and pairing in electron-doped cuprates
Pavel Krotkov, Andrey V. Chubukov
Abstract
We study the normal state and pairing instability in electron-doped cuprates near optimal doping. We show that the fermionic self-energy has a non-Fermi liquid form leading to peculiar frequency dependencies of the conductivity and the Raman response. We solve the pairing problem and demonstrate that Tc is determined by the curvature of the Fermi surface, and the pairing gap Δ(k,ω) is strongly non-monotonic along the Fermi surface. The normal state frequency dependencies, the value of Tc10K and the k-dependence of the gap agree with the experiment.
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