A COMPARISON OF THE ZERO BIAS DIFFERENTIAL RESISTANCE OF AG-NB AND AG-ND1.85CE0.15CUO4-DELTA POINT CONTACTS AS A FUNCTION OF TEMPERATURE BELOW T(C)

被引：14

作者：

REINERTSON, RC ^{[1
]}

SMITH, CW ^{[1
]}

DOLAN, PJ ^{[1
]}

机构：

[1] UNIV MAINE,ORONO,ME 04469

来源：

PHYSICA C | 1992年 / 200卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90391-O

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Point contact spectra for contacts between Ag and two different superconductors, Nb and Nd1.85Ce0.15CuO4-delta, were measured as a function of temperature using a crossed wire-wedge technique (R.C. Reinertson et al., Physica BY 165&166 (1990) 1615). The temperature dependence of the zero bias resistance quantitatively agrees with predictions of the theory by Blonder, Tinkham and Klapwijk (Phys. Rev. BY 25 (1982) 4515) for normal: superconductor point contacts for all interface scattering barrier strengths observed in this study (Z = 0.3 to Z = 1.0). The zero bias temperature dependence of Ag:Nd1.85Ce0.15CUO4-delta contacts indicates a systematically higher range of barrier strengths and contact resistances than typical Ag:Nb contacts.

引用

页码：377 / 384

页数：8

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