A fabrication process for microstrip-coupled superconducting transition edge sensors giving highly reproducible device characteristics

被引:13
作者
Glowacka, D. M. [1 ]
Goldie, D. J. [1 ]
Withington, S. [1 ]
Crane, M. [1 ]
Tsaneva, V. [1 ]
Audley, M. D. [1 ]
Bunting, A. [2 ]
机构
[1] Univ Cambridge, Cavendish Lab, Cambridge, England
[2] Scottish Microelect Ctr, Edinburgh, Midlothian, Scotland
关键词
transition edge sensors; superconducting microstrip; submillimeter-wave detectors;
D O I
10.1007/s10909-007-9635-z
中图分类号
O59 [应用物理学];
学科分类号
摘要
Astronomical instruments for measuring Cosmic Microwave Background polarisation, such as CLOVER, require large arrays of Superconducting Transition Edge Sensors (TESs). We report recent results from a processing route development aimed at high yield fabrication of microstrip-coupled TESs. The incoming signal is delivered onto a silicon nitride membrane by means of a superconducting microstrip transmission line. This transmission line is then terminated with a thin-film load resistor. The wafer-based fabrication route of the Mo/Cu TESs gives highly reproducible device characteristics in terms of superconducting transition temperature, electrical and thermal characteristics. An overall device yield of 65% has been achieved for a multi-wafer processing run.
引用
收藏
页码:249 / 254
页数:6
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