Characterization of Mo/Au Transition-Edge Sensors with Different Geometric Configurations
Characterization of Mo/Au Transition-Edge Sensors with Different Geometric Configurations
复制标题
具有不同几何结构的 Mo/Au 过渡边缘传感器的表征
DOI：
10.1007/s10909-013-1031-2
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发表时间：
2014
影响因子：
2
通讯作者：
J. Sadleir
中科院分区：
文献类型：
--
作者：
S. Smith;J. Adams;S. Bandler;S. E. Busch;J. Chervenak;M. Eckart;F. Finkbeiner;R. Kelley;C. Kilbourne;S. ;J. Porst;F. Porter;J. Sadleir
Mo/Au过渡边缘传感器在测量的温度T和场B的临界电流I_\mathrm{{C}}（T，B）IC（T，B）依赖性中表现出弱链接行为。这是Nb电偏置接触和双层之间的纵向邻近化的结果。理解弱连接超导性如何影响电阻转变和探测器能量分辨率是非常有趣的。在这篇文章中，我们提出了研究$$I_\mathrm{{C}}（T，B）$$IC（T，B）的三个设备，具有不同的几何形状的金属沉积的顶部的传感器用于噪声缓解和X射线吸收。结果表明，这些功能改变了测得的$$I_\mathrm{{C}}（T，B）$$IC（T，B）相比，以前看到的设备上没有额外的沉积层的测量。对小信号跃迁参数$$\alpha $$α和$$\beta $$β的测量也揭示了设计之间的差异，这些差异影响了对X射线和能量分辨率的测量响应。
Mo/Au transition-edge sensors exhibit weak-link behavior in the measured temperature, $$T$$T and field, $$B$$B dependence of the critical current $$I_\mathrm{{C}}(T,B)$$IC(T,B). This is a consequence of the longitudinal proximitization between the Nb electrical bias contacts and the bilayer. Understanding how weak-link superconductivity impacts the resistive transition and the detector energy resolution is of great interest. In this contribution we present studies of $$I_\mathrm{{C}}(T,B)$$IC(T,B) for three devices that have different geometries of metallic depositions on top of the sensor used for noise mitigation and X-ray absorption. Results show that these features change the measured $$I_\mathrm{{C}}(T,B)$$IC(T,B) compared to the previously seen measurements on devices without additional deposition layers. Measurements of the small signal transition parameters $$\alpha $$α and $$\beta $$β also reveal differences between designs that impact the measured response to X-rays and energy resolution.