تقرير
Phase transformation-induced superconducting aluminium-silicon alloy rings
| العنوان: | Phase transformation-induced superconducting aluminium-silicon alloy rings |
|---|---|
| المؤلفون: | Johnson, B. C., Stuiber, M., Creedon, D. L., Berhane, A., van Beveren, L. H. Willems, Rubanov, S., Cole, J. H., Mourik, V., Hamilton, A. R., Duty, T. L., McCallum, J. C. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Superconductivity |
| الوصف: | The development of a materials platform that exhibits both superconducting and semiconducting properties is an important endeavour for a range of emerging quantum technologies. We investigate the formation of superconductivity in nanowires fabricated with silicon-on-insulator (SOI). Aluminium from deposited contact electrodes is found to interdiffuses with the Si nanowire structures to form an Al-Si alloy along the entire length of the predefined nanowire device over micron length scales at temperatures well below that of the Al-Si eutectic. The resultant transformed nanowire structures are layered in geometry with a continuous Al-Si alloy wire sitting on the buried oxide of the SOI and a residual Si cap sitting on top of the wire. The phase transformed material is conformal with any predefined device patterns and the resultant structures are exceptionally smooth-walled compared to similar nanowire devices formed by silicidation processes. The superconducting properties of a mesoscopic AlSi ring formed on a SOI platform are investigated. Low temperature magnetoresistance oscillations, quantized in units of the fluxoid, h/2e, are observed. Comment: 11 pages, 9 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2207.05343 |
| رقم الأكسشن: | edsarx.2207.05343 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |