Stacked Josephson Junction Arrays for the Pulse-Driven AC Josephson Voltage Standard
| العنوان: | Stacked Josephson Junction Arrays for the Pulse-Driven AC Josephson Voltage Standard |
|---|---|
| المؤلفون: | Oliver Kieler, Ralf Behr, Johannes Kohlmann, Thomas Weimann, R. Wendisch, Rolf-Werner Gerdau |
| المصدر: | IEEE Transactions on Applied Superconductivity. 31:1-5 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Josephson effect, Materials science, business.industry, Josephson voltage standard, Pulsed power, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Pulse (physics), Atomic layer deposition, Chemical-mechanical planarization, 0103 physical sciences, Waveform, Optoelectronics, Electrical and Electronic Engineering, 010306 general physics, business, Voltage |
| الوصف: | We developed a fabrication process to establish large arrays of up to 5-stacked Josephson junctions for the Josephson Arbitrary Waveform Synthesizer (JAWS). SNS-type Josephson junctions with NbxSi1-x barriers are used for this application. By modifying our standard window process, e.g. to add a CMP (chemical mechanical polishing) and an ALD (atomic layer deposition) step, the yield of this process was increased. An output voltage of 1 V RMS could be achieved by using 4 JAWS arrays in series with a total number of 60,000 5-stacked junctions. The investigation of the current-voltage characteristics (IVC) showed an interesting and potentially useful feature. The required pulse amplitude per junction for getting the maximum Shapiro step width reduces for higher junction stacks. We found that the pulse power linearly reduces with the square of the junction number in the array. The origin of this effect might be a strong neighbour-neighbour interaction of the junctions, which are closely arranged within the stacked configuration. This might generate a strong self-synchronization of the junctions. |
| تدمد: | 2378-7074 1051-8223 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::cbd5ea23cb02f20851b50df8c0614736 https://doi.org/10.1109/tasc.2021.3060678 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........cbd5ea23cb02f20851b50df8c0614736 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23787074 10518223 |
|---|