Characterization of Josephson junctions for the elaboration of high-Tc SQUIDS

被引：0
|
作者：
Vivas, P [1 ]
Chacón, M [1 ]
Gómez, M [1 ]
Prieto, P [1 ]
机构：
[1] Univ Valle, Dept Fis, Cali 25360, Colombia
来源：
PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 2000年 / 220卷 / 01期
关键词：
D O I：
10.1002/1521-3951(200007)220:1<503::AID-PSSB503>3.0.CO;2-8
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In this work we report the fabrication of superconductor loops, formed by an array of two Josephson junctions (JJ) in parallel. The JJ are based on YBa2Cu3O7-x epitaxial thin films deposited on SrTiO3 bicrystal substrates with misorientation angles of 24 degrees and 36.8 degrees. The epitaxial, c-axis oriented YBa2Cu3O7-x films were grown "in situ" by a high oxygen pressure de sputtering technique. For the fabrication of the superconductor loop a photolithographic method and a non-aqueous chemical etching were used. The superconducting properties of the superconductor loops were analyzed by measuring the current-voltage characteristics. The magnetic field dependence of the critical current I-c(B) and the I-V curves under microwave irradiation showed weak-link Josephson behavior. The dependence of I-c(B) shows an interference pattern due to the phase differences across the both junctions.
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页码：503 / 507
页数：5
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