Electric properties of planar Ag/HgBa2CaCu2O6+δ interface

被引：8
作者：
Jukna, A
Yun, SH
Balevicius, S
Karlsson, UO
机构：
[1] Inst Semicond Phys, High Power Pulse Lab, LT-2600 Vilnius, Lithuania
[2] Royal Inst Technol, Dept Phys, S-10044 Stockholm, Sweden
来源：
PHYSICA C | 1999年 / 316卷 / 1-2期
关键词：
high-T-c superconductors; Ag/HgBa2CaCu2O6+delta interface; contact resistance;
D O I：
10.1016/S0921-4534(99)00253-1
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Silver coatings were magnetron sputtered onto the surface of highly c-axis-oriented HgBa2CaCu2O6+delta superconducting thin films exhibiting zero resistance T-c at about 120 K and the critical current density similar to 10(5) A/cm(2) at 100 K. Electrical resistance of the Ag/HgBa2CaCu2O6+delta planar interface and current-voltage dependencies were investigated in a course of post-deposition annealing of the Ag/HgBa2CaCu2O6+delta at 50-350 degrees C in both purl oxygen and oxygen-free ambient. Results of the electrical measurements are explained in terms of the insulating layer formation at the Ag/HgBa2CaCu2O6+delta interface. It is assumed this insulator is a product created by oxygen non-stoichiometry and decomposition of the superconductor at the interface between both materials. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：83 / 88
页数：6
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