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

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

2007-09-26

arxiv.org/abs/0709.4146v1

Phys. Rev. B 77, 024508 (2008)

Physics

Condensed Matter

Superconductivity

7 pages, 6 figures

Scientific paper

10.1103/PhysRevB.77.024508

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.

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