Characterization of large two-dimensional YBa2Cu3O7–δSQUID arrays
Characterization of large two-dimensional YBa2Cu3O7–δSQUID arrays
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大型二维 YBa2Cu3O7–δSQUID 阵列的表征
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
A. L. Escobar
中科院分区：
文献类型：
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作者：
B. Taylor;S. Berggren;M. O'Brien;M. deAndrade;B. Higa;A. L. Escobar
利用阶跃边约瑟夫森结工艺制作了大型二维SQUID阵列。在确定获得最佳性能的条件方面，分析了阵列的性能。我们发现，场-电压传递函数Vb在特定的温度和器件电流偏置点达到最优化，并得到了描述Vb与SQUID阵列的临界电流和动态电阻的关系以及作为温度的函数的经验表达式。SQUID阵列的Vb的经验表达式类似于著名的单个SQUID的理论模型所给出的表达式。
Large two-dimensional SQUID arrays were made using the step-edge Josephson junction process. The performance of the arrays is analyzed with respect to determining the conditions under which the optimal performance is achieved. We find that optimization of the field-voltage transfer function VB is reached at a specific temperature and device current bias point, and arrive at an empirical expression describing the dependence of VB on the critical current and dynamic resistance of the SQUID array and as a function of temperature. The empirical expression for VB of the SQUID arrays is similar to that given by well known theoretical models for a single SQUID.