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Abstract: We address the issue whether the data on optical conductivity and Ramanscattering 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. Wecalculate the conductivity and Raman intensity for elastic scattering, and findthat a non-monotonic gap gives rise to several specific features in optical andRaman response functions. We argue that all these features are present in theexperimental data on Nd$ {2-x}$Ce$ {x}$CuO$ 4$ and Pr$ {2-x}$Ce$ {x}$CuO$ 4$compounds.



Author: Ilya Eremin, Evelina Tsoncheva, Andrey V. Chubukov

Source: https://arxiv.org/







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