Tunneling measurements of the superconductor Nd1.85Ce0.15CuO4-delta

被引：11

作者：

Ekino, T ^{[1
]}

Doukan, T ^{[1
]}

Fujii, H ^{[1
]}

机构：

[1] HIROSHIMA UNIV,FAC SCI,HIGASHIHIROSHIMA 739,JAPAN

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 1996年 / 105卷 / 3-4期

关键词：

D O I：

10.1007/BF00768445

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report tunneling measurements of the electron-doped superconductor Nd1.85Ce0.15CuO4-delta using break junctions. The observed finest gap structure is well expressed by the BCS density of states with the energy gap of Delta = 6.1 meV and a very small broadening parameter, having the ratio 2 Delta/k(B)T(c) = 8.2 with T-c = 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 pairing-symmetry difference between them.

引用

页码：563 / 568

页数：6

共 7 条

[1] DIRECT MEASUREMENT OF QUASIPARTICLE-LIFETIME BROADENING IN A STRONG-COUPLED SUPERCONDUCTOR [J].