A double DC-SQUID device for flux locked loop operation
A double DC-SQUID device for flux locked loop operation
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DOI：
10.1109/20.133839
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发表时间：
1991-03
影响因子：
2.1
通讯作者：
V. Foglietti;M. Giannini;G. Petrocco
中科院分区：
文献类型：
--
作者：
V. Foglietti;M. Giannini;G. Petrocco
一种新型双直流SQUID装置已被开发出来。它由级联配置的两个 SQUID 组成，具有相同的电气参数，但具有不同的几何形状。这种结构使该装置特别适合磁通锁定环运行，无需调制磁通。因此，读出电子方案大大简化，而不会降低第一级的噪声性能。第一个 DC SQUID 具有梯度计配置，带有旁路电感的额外阻尼电阻。所使用的技术类似于具有平面 Nb-Nb/sub 2/O/sub 5/-PbAuIn 结和 2.5μm 最小尺寸光刻的七层 IBM 工艺。
A novel double DC SQUID device has been developed. It consists of two SQUIDs in a cascade configuration with the same electrical parameters but with a different geometry. This structure makes the device particularly suitable for flux-locked-loop operation without need for modulation flux. Consequently the readout electronic scheme is greatly simplified without degrading the noise performance of the first stage. The first DC SQUID has a gradiometer configuration with extra damping resistors shunting the inductance. The technology used is similar to the seven-layer IBM process with planar Nb-Nb/sub 2/O/sub 5/-PbAuIn junctions and 2.5- mu m minimum size lithography.