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We remeasured the magnetic field dependence of the low-temperature specificheat of the electron-doped superconductor Pr1.85Ce0.15CuO4 (T_C=22\pm 2K) undera different measurement procedure. Under field-cooling, the electronic specificheat follows C_{el}(H, T)=\gamma (H)T from 4.5K down to 1.8K. In the fieldrange H_{C1}<H<0.5 H_{C2}, the Sommerfeld coefficient \gamma (H) is well fit bya power-law \gamma (H)\sim H^{1/2}. This result suggests that the pairingsymmetry is d-wave-like at all temperatures below 4.5K. Our new measurementshows no evidence for the linear field dependence of \gamma (H) foundpreviously at T=2K.Comment: 4 pages, 3 figure

physical review. b, condensed matter and materials physics

Magnetic-field dependence of the low-temperature specific heat of the electron-doped superconductor<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Pr</mml:mi><mml:mn>1.85</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Ce</mml:mi><mml:mn>0.15</mml:mn></mml:msub><mml:mi mathvariant="normal">Cu</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>

Magnetic-field dependence of the low-temperature specific heat of the electron-doped superconductorPr1.85Ce0.15CuO4