Temperature-dependent transport characteristics of quasiballistic normal-metal-superconductor junctions

被引:5
|
作者
Belogolovskii, M [1 ]
Grajcar, M
Seidel, P
机构
[1] Donetsk Phys & Tech Inst, UA-340114 Donetsk, Ukraine
[2] Comenius Univ, Dept Solid State Phys, SK-84215 Bratislava, Slovakia
[3] Univ Jena, Inst Festkorperphys, D-07743 Jena, Germany
关键词
D O I
10.1103/PhysRevB.61.3259
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study the temperature effect on the zero-bias conductance and current fluctuations in a two-terminal heterostructure with a mesoscopic normal region connected to normal and superconducting reservoirs. For a quasiballistic regime, the shape of the conductance-voltage characteristic and its temperature behavior for an s-wave superconductor strongly depends on the transmission properties of the normal interlayer. On the contrary, in the low-frequency limit, the near-zero-voltage current noise power versus temperature is insensitive to the nature of the transition region but dramatically changes for different pairing states of the superconducting electrode. The relevant experiment could serve as a diagnostic tool to identify the symmetry of the superconducting order parameter in high-temperature superconductors.
引用
收藏
页码:3259 / 3262
页数:4
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