FABRICATION AND CHARACTERIZATION OF YBA2CU3O7 STEP-EDGE JUNCTION ARRAYS

被引：39

作者：

REUTER, W ^{[1
]}

SIEGEL, M ^{[1
]}

HERRMANN, K ^{[1
]}

SCHUBERT, J ^{[1
]}

ZANDER, W ^{[1
]}

BRAGINSKI, AI ^{[1
]}

MULLER, P ^{[1
]}

机构：

[1] WALTHER MEISSNER INST TIEFTEMP FORSCH,W-8046 GARCHING,GERMANY

来源：

APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 18期

关键词：

D O I：

10.1063/1.109395

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated one-dimensional arrays with up to 600 step-edge Josephson junctions (SEJ) fabricated by pulsed laser deposition of YBa2Cu3O7 (YBCO) films on steep steps in epitaxial LaAlO3 substrates. The steps were prepared by Ar-ion milling and the YBCO thin films were patterned either by Ar-ion milling or by an inhibit process. The current-voltage (I-V) characteristics and the Josephson emission of a single SEJ show that it consists of two resistively shunted-junction-type (RSJ) weak links in series which have different critical currents, I(C1), and I(C2). The I-V characteristics of our arrays were also close to the RSJ-model. The number of series-connected weak links deduced from the I-V curves was usually higher than the number of steps. Histograms of the individual weak link I(CS) showed two peaks at I(C1) and I(C2). The I(C) spread was about +/- 20% to +/- 40% of these two values. Radiation from arrays was detected and an evidence of phase locking in Josephson junction clusters obtained.

引用

页码：2280 / 2282

页数：3

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