Tunneling measurements of the superconductor Nd1.85C0.15CuO4−δ
- Cite this article as:
- Ekino, T., Doukan, T. & Fujii, H. J Low Temp Phys (1996) 105: 563. doi:10.1007/BF00768445
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We report tunneling measurements of the electron-doped superconductor Nd1.85Ce0.15Cu04−gd using break junctions. The observed finest gap structure is well expressed by the BCS density of states with the energy gap of Δ = 6.1 meV and a very small broadening parameter, having the ratio 2Δ/kBTc = 8.2 with Tc = 17.3 K. These features are similar to our tunneling results for the hole-doped cuprate superconductors. Therefore we find no essential difference in the gap structure, in spite of a common believing of the pairingsymmetry difference between them.