Implications of weak-link behavior on the performance of Mo/Au bilayer transition-edge sensors
Implications of weak-link behavior on the performance of Mo/Au bilayer transition-edge sensors
复制标题
弱连接行为对 Mo/Au 双层过渡边缘传感器性能的影响
DOI：
10.1063/1.4818917
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发表时间：
2013
影响因子：
3.2
通讯作者：
J. Sadleir
中科院分区：
文献类型：
--
作者：
S. Smith;J. Adams;C. Bailey;S. Bandler;S. E. Busch;J. Chervenak;M. Eckart;F. Finkbeiner;C. Kilbourne;R. Kelley;Sangjun Lee;J. Porst;F. Porter;J. Sadleir
了解超导到正常过渡的物理特性是优化过渡边缘传感器（TES）的设计和性能的基础。最近的临界电流IC测量的方形Mo/Au双层结构表明，它们作为弱超导链接，表现出振荡，夫琅和费的行为与外加磁场。在本文中，我们调查的影响，这种行为的TES X射线探测器在电阻转变。这些装置包括用于吸收器连接和抑制探测器噪声的普通金属部件。我们提出了广泛的测量IC作为温度T和场B的函数，这表明一个复杂的温度和电流的演变相比，从一个简单的几何预期的行为。我们引入了一个反向分流结模型来描述作为电流I、温度T和磁场B的函数的TES电阻转变。从这个模型出发，我们计算了R（T，I，B）的轨迹。
Understanding the physical properties of the superconducting-to-normal transition is fundamental for optimizing the design and performance of transition-edge sensors (TESs). Recent critical current IC measurements of square Mo/Au bilayer structures show that they act as weak superconducting links, exhibiting oscillatory, Fraunhofer-like behavior with applied magnetic field. In this paper, we investigate the implications of this behavior for TES x-ray detectors operated in the resistive transition. These devices include normal metal features used for absorber attachment and suppression of detector noise. We present extensive measurements of IC as a function of temperature T and field B, which show a complex temperature and current evolution when compared with the behavior expected from a simple geometry. We introduce a resistively shunted junction model for describing the TES resistive transition as a function of current I, temperature T, and magnetic field B. From this model, we calculate the R(T,I,B) tra...