Characterization and reduction of unexplained noise in superconducting transition-edge sensors

被引：110

作者：

Ullom, JN ^{[1
]}

Doriese, WB ^{[1
]}

Hilton, GC ^{[1
]}

Beall, JA ^{[1
]}

Deiker, S ^{[1
]}

Duncan, WD ^{[1
]}

Ferreira, L ^{[1
]}

Irwin, KD ^{[1
]}

Reintsema, CD ^{[1
]}

Vale, LR ^{[1
]}

机构：

[1] NIST, Boulder, CO 80305 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 21期

关键词：

D O I：

10.1063/1.1753058

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The noise in superconducting transition-edge sensors (TESs) commonly exceeds simple theoretical predictions. The reason for this discrepancy is presently unexplained. We have measured the amplitude and frequency dependence of the noise in TES sensors with eight different geometries. In addition, we have measured the dependence of the noise on operating resistance, perpendicular magnetic field, and bath temperature. We find that the unexplained noise contribution is inversely correlated with the temperature width of the superconducting-to-normal transition and is reduced by a perpendicular field and in certain geometries. These results suggest paths to improved sensor performance. (C) 2004 American Institute of Physics.

引用

页码：4206 / 4208

页数：3

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