Exploring the performance of thin-film superconducting multilayers as kinetic inductance detectors for low-frequency detection
Exploring the performance of thin-film superconducting multilayers as kinetic inductance detectors for low-frequency detection
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探索薄膜超导多层膜作为低频检测动感电感探测器的性能
DOI：
10.1088/1361-6668/aa94b7
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发表时间：
2018
影响因子：
3.6
通讯作者：
Zhao S
中科院分区：
文献类型：
--
作者：
Zhao S
我们用数值方法求解了描述Ti-Al薄膜中空间变化的超导接近效应的扩散Usadel方程，该方程的厚度值适合于动态电感探测器（KIDs）作为光子探测器工作，探测阈值在50-90 GHz频率范围内。利用Nam对超导体复合电导率的Mattis-Bardeen计算的扩展，我们展示了如何计算空间变化情况下的表面阻抗，从而计算表面阻抗质量因子。此外，我们计算了在远低于转变温度的温度下的能量和空间平均准粒子寿命，并与Al中的计算结果进行了比较。我们的对断裂阈值结果显示了具有相同总膜厚度的双层和三层之间的差异。与薄膜人工智能相比，我们还预测了高质量因子和较长的多层平均准粒子复合时间。我们的计算为设计KIDs在这个科学上重要的频率范围内工作提供了一条途径。
We have solved numerically the diffusive Usadel equations that describe the spatially varying superconducting proximity effect in Ti–Al thin-film bi-and trilayers with thickness values that are suitable for kinetic inductance detectors (KIDs) to operate as photon detectors with detection thresholds in the frequency range of 50–90 GHz. Using Nam's extension of the Mattis–Bardeen calculation of the superconductor complex conductivity, we show how to calculate the surface impedance for the spatially varying case, and hence the surface impedance quality factor. In addition, we calculate energy-and spatially-averaged quasiparticle lifetimes at temperatures well-below the transition temperature and compare to calculation in Al. Our results for the pair-breaking threshold demonstrate differences between bilayers and trilayers with the same total film thicknesses. We also predict high quality factors and long multilayer-averaged quasiparticle recombination times compared to thin-film Al. Our calculations give a route for designing KIDs to operate in this scientifically-important frequency regime.
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强耦合和不纯超导体的电磁特性理论。
影响因子：
--
作者：
S. Nam
通讯作者：
S. Nam
用于 80-120 GHz 空间观测的双层动感电感探测器
DOI：
10.1051/0004-6361/201526206
发表时间：
2015
期刊：
arXiv: Instrumentation and Methods for Astrophysics
影响因子：
--
作者：
A. Catalano;J. Goupy;H. Sueur;A. Benoȋt;O. Bourrion;M. Calvo;A. D’Addabbo;L. Dumoulin;F. Levy;J. Macias;S. Marnieros;N. Ponthieu;A. Monfardini
通讯作者：
A. Monfardini
具有铁磁夹层的隧道约瑟夫森结的特性
影响因子：
3.7
作者：
A. Vasenko;A. Vasenko;A. Golubov;M. Kupriyanov;M. Weides
通讯作者：
M. Weides
影响因子：
4
作者：
G. Jones;B. Johnson;M. Abitbol;P. Ade;S. Bryan;H.-M. Cho;P. Day;D. Flanigan;K. Irwin;D. Li;P. Mauskopf;H. McCarrick;A. Miller;Y. Song;C. University;Cardiff University;A. S. University;S. N. Laboratory;Jet propulsion Laboratory;S. University;U. California
通讯作者：
G. Jones;B. Johnson;M. Abitbol;P. Ade;S. Bryan;H.-M. Cho;P. Day;D. Flanigan;K. Irwin;D. Li;P. Mauskopf;H. McCarrick;A. Miller;Y. Song;C. University;Cardiff University;A. S. University;S. N. Laboratory;Jet propulsion Laboratory;S. University;U. California
影响因子：
16.6
作者：
P. Visser;P. Visser;J. Baselmans;J. Bueno;N. Llombart;T. Klapwijk
通讯作者：
T. Klapwijk