تقرير
Controlling $T_c$ of Iridium films using interfacial proximity effects
| العنوان: | Controlling $T_c$ of Iridium films using interfacial proximity effects |
|---|---|
| المؤلفون: | Hennings-Yeomans, R., Chang, C. L., Ding, J., Drobizhev, A., Fujikawa, B. K., Han, S., Karapetrov, G., Kolomensky, Yu. G., Novosad, V., O'Donnell, T., Ouellet, J. L., Pearson, J., Polakovic, T., Reggio, D., Schmidt, B., Sheff, B., Smith, R. J., Wang, G., Welliver, B., Yefremenko, V. G. |
| سنة النشر: | 2017 |
| المجموعة: | High Energy Physics - Experiment Nuclear Experiment Physics (Other) |
| مصطلحات موضوعية: | Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Nuclear Experiment |
| الوصف: | High precision calorimetry using superconducting transition edge sensors requires the use of superconducting films with a suitable $T_c$, depending on the application. To advance high-precision macrocalorimetry, we require low-$T_c$ films that are easy to fabricate. A simple and effective way to suppress $T_c$ of superconducting Iridium through the proximity effect is demonstrated by using Ir/Pt bilayers as well as Au/Ir/Au trilayers. While Ir/Au films fabricated by applying heat to the substrate during Ir deposition have been used in the past for superconducting sensors, we present results of $T_c$ suppression on Iridium by deposition at room temperature in Au/Ir/Au trilayers and Ir/Pt bilayers in the range of $\sim$20-100~mK. Measurements of the relative impedance between the Ir/Pt bilayers and Au/Ir/Au trilayers fabricated show factor of $\sim$10 higher values in the Ir/Pt case. These new films could play a key role in the development of scalable superconducting transition edge sensors that require low-$T_c$ films to minimize heat capacity and maximize energy resolution, while keeping high-yield fabrication methods. Comment: 5 journal pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1711.03648 |
| رقم الأكسشن: | edsarx.1711.03648 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |