Series array of incommensurate superconducting quantum interference devices from YBa2Cu3O7−δ ion damage Josephson junctions
Series array of incommensurate superconducting quantum interference devices from YBa2Cu3O7−δ ion damage Josephson junctions
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YBa2Cu3O7−δ 离子损伤约瑟夫森结的不相称超导量子干涉装置串联阵列
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
R. Dynes
中科院分区：
文献类型：
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作者：
S. Cybart;Stephen M. Wu;S. Anton;I. Siddiqi;J. Clarke;R. Dynes
我们利用YBa2Cu3O7−δ薄膜离子损伤约瑟夫森结制作了一系列的超导量子干涉器件。SQUID环的面积呈指数递减，因此电流偏置阵列对磁场的响应是零场下的单个电压尖峰。我们将阵列的电流-电压特性拟合到一个模型中，在该模型中，我们假设了具有SQUID临界电流正态分布的阻性分流结模型，并对SQUID两端的电压求和。在75K时，这些临界电流的标准偏差为12%。
We have fabricated a series array of 280 superconducting quantum interference devices (SQUIDs) using YBa2Cu3O7−δ thin film ion damage Josephson junctions. The SQUID loop areas were tapered exponentially so that the response of the current-biased array to magnetic field is a single voltage spike at zero field. We fitted the current-voltage characteristics of the array to a model in which we summed the voltages across the SQUIDs assuming a resistively shunted junction model with a normal distribution of SQUID critical currents. At 75 K the standard deviation of these critical currents was 12%.