Signatures of non-monotonic d-wave gap in electron-doped cuprates

Abstract

We address the issue whether the data on optical conductivity and Raman scattering in electron-doped cuprates below $T_c$ support the idea that the $d-$wave gap in these materials is non-monotonic along the Fermi surface. We calculate the conductivity and Raman intensity for elastic scattering, and find that a non-monotonic gap gives rise to several specific features in optical and Raman response functions. We argue that all these features are present in the experimental data on Nd${}_{2-x}$Ce${}_x$CuO${}_4$ and Pr${}_{2-x}$Ce${}_x$CuO${}_4$ compounds.

7 pages, 6 figures

References in corpus (5)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Gapless superconductivity and the Fermi arc in the cuprates
• Nodal Quasiparticle Lifetimes in Cuprate Superconductors
• Optical determination of the superconducting energy gap in electron-doped Pr_{1.85}Ce_{0.15}CuO_4
• Theory of non-Fermi liquid and pairing in electron-doped cuprates

Cited by in corpus (3)

• Nodeless superconductivity in the infinite-layer electron-doped Sr_0.9La_0.1CuO_2 cuprate superconductor
• Energy Scales in the Raman spectrum of electrons and hole doped cuprates within competing scenarios
• Doping effect on the evolution of the pairing symmetry in n-type superconductor near antiferromagnetic phase boundary