Non-Fermi liquid and pairing in electron-doped cuprates

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 T_c 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 T_c\sim10K and the k-dependence of the gap agree with the experiment.

4 pages, 4 figures

References in corpus (1)

• Hot Spots and Transition from d-Wave to Another Pairing Symmetry in the Electron-Doped Cuprate Superconductors

Cited by in corpus (20)

• Pairing symmetry of the one-band Hubbard model in the paramagnetic weak-coupling limit: a numerical RPA study
• Pseudogap in underdoped cuprates and spin-density-wave fluctuations
• Dirty Superconductivity in the Electron-Doped Cuprate PCCO: a Tunneling Study
• Quantum-critical pairing in electron-doped cuprates
• Mottness collapse and statistical quantum criticality
• The resonance peak in the electron-doped cuprate superconductors
• Optical determination of the superconducting energy gap in electron-doped Pr_{1.85}Ce_{0.15}CuO_4
• Breakdown of Fermi liquid behavior at the (π,π)=2k_F spin-density wave quantum-critical point: the case of electron-doped cuprates
• Theory of non-Fermi liquid and pairing in electron-doped cuprates
• Superconductivity and topological Fermi surface transitions in electron-doped cuprates near optimal doping
• Superconducting phase diagram of itinerant antiferromagnets
• BCS Superconductivity in Quantum Critical Metals
• Spin-resolved impurity resonance states in electron-doped cuprate superconductors
• Self-energy corrections to anisotropic Fermi surfaces
• Energy Scales in the Raman spectrum of electrons and hole doped cuprates within competing scenarios
• A family of anisotropic integral operators and behaviour of its maximal eigenvalue
• Coexistence of the antiferromagnetic and superconducting order and its effect on spin dynamics in electron-doped high-$T_c$ cuprates
• On the Positive-Definiteness of an Anisotropic Operator
• Casimir effect mechanism of pairing between fermions in the vicinity of a magnetic quantum critical point
• An anisotropic integral operator in high temperature superconductivity