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Magnetic field dependence of the low-temperature specific heat of the electron-doped superconductor Pr1.85Ce0.15CuO4

W. Yu·B. Liang·R. L. Greene
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Abstract

We remeasured the magnetic field dependence of the low-temperature specific heat of the electron-doped superconductor Pr1.85Ce0.15CuO4 (T_C=22\pm 2K) under a different measurement procedure. Under field-cooling, the electronic specific heat follows C_{el}(H, T)=γ(H)T from 4.5K down to 1.8K. In the field range H_{C1}<H<0.5 H_{C2}, the Sommerfeld coefficient γ(H) is well fit by a power-law γ(H)\sim H^{1/2}. This result suggests that the pairing symmetry is d-wave-like at all temperatures below 4.5K. Our new measurement shows no evidence for the linear field dependence of γ(H) found previously at T=2K.

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W. Yu, B. Liang, R. L. Greene. 2005-09-26. Magnetic field dependence of the low-temperature specific heat of the electron-doped superconductor Pr1.85Ce0.15CuO4. https://doi.org/10.1103/physrevb.72.212512

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