QUASI-PARTICLE-TUNNELING PROPERTIES OF BA1-XKXBIO3/BABI2OY/BA1-XKXBIO3 SANDWICH JUNCTIONS

被引：16

作者：

MARTIN, S

HELLMAN, ES

KUSSMAUL, A

HARTFORD, EH

机构：

[1] AT and T Bell Laboratories, Murray Hill

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.47.14510

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quasiparticle-tunneling measurements on sandwich junctions patterned from molecular-beam-epitaxy-grown Ba1-xKBiO3/BaBi2Oy/Ba1-xKxBiO3 trilayers are presented, where we find evidence for superconductor-insulator-normal-metal tunneling with a 2-meV gap. The subgap conductance is found to vary from a linear voltage dependence to a BCS-like voltage dependence. The temperature dependence of the zero-bias conductance and the thermal broadening of the conductance peak are studied.

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页码：14510 / 14513

页数：4

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