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Microwave Electrodynamics of the Electron-Doped Cuprate Superconductors Pr_(2-x)Ce_(x)CuO_(4-y) and Nd_(2-x)Ce_(x)CuO_(4-y)

J. David Kokales·Patrick Fournier·Lucia V. Mercaldo·Vladimir V. Talanov·Richard L. Greene·Steven M. Anlage
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Abstract

The pairing state symmetry of the electron-doped cuprate superconductors is thought to be s-wave in nature, in contrast with their hole-doped counterparts which exhibit a d-wave symmetry. We re-examine this issue based on recent improvements in our electron-doped materials and our measurement techniques. We report microwave cavity perturbation measurements of the temperature dependence of the penetration depth of Pr_(2-x)Ce_(x)CuO_(4-y) and Nd_(2-x)Ce_(x)CuO_(4-y) crystals. Our data strongly suggest that the pairing symmetry in these materials is not s-wave.

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J. David Kokales, Patrick Fournier, Lucia V. Mercaldo, Vladimir V. Talanov, Richard L. Greene, Steven M. Anlage. 2000-01-12. Microwave Electrodynamics of the Electron-Doped Cuprate Superconductors Pr_(2-x)Ce_(x)CuO_(4-y) and Nd_(2-x)Ce_(x)CuO_(4-y). https://doi.org/10.1016/s0921-4534(00)01498-2

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