Non-Fermi liquid and pairing in electron-doped cuprates

Details Non-Fermi liquid and pairing in electron-doped cuprates Non-Fermi liquid and pairing in electron-doped cuprates

2005-11-29

arxiv.org/abs/cond-mat/0511712v1

Phys. Rev. Lett. 96, 107002 (2006)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.96.107002

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 T_c is determined by the curvature of the Fermi surface, and the pairing gap \Delta(k,\omega) is strongly non-monotonic along the Fermi surface. The normal state frequency dependencies, the value of T_c\sim10K and the k-dependence of the gap agree with the experiment.

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