تقرير
Chiral Quasiparticle Tunneling Between Quantum Hall Edges in Proximity with a Superconductor
| العنوان: | Chiral Quasiparticle Tunneling Between Quantum Hall Edges in Proximity with a Superconductor |
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| المؤلفون: | Wei, M. T., Draelos, A. W., Seredinski, A., Ke, C. T., Li, H., Mehta, Y., Watanabe, K., Taniguchi, T., Yamamoto, M., Tarucha, S., Finkelstein, G., Amet, F., Borzenets, I. V. |
| المصدر: | Phys. Rev. B 100, 121403 (2019) |
| سنة النشر: | 2019 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Superconductivity |
| الوصف: | We study a two-terminal graphene Josephson junction with contacts shaped to form a narrow constriction, less than 100nm in length. The contacts are made from type II superconducting contacts and able to withstand magnetic fields high enough to reach the quantum Hall (QH) regime in graphene. In this regime, the device conductance is determined by edge states, plus the contribution from the constricted region. In particular, the constriction area can support supercurrents up to fields of ~2.5T. Moreover, enhanced conductance is observed through a wide range of magnetic fields and gate voltages. This additional conductance and the appearance of supercurrent is attributed to the tunneling between counter-propagating quantum Hall edge states along opposite superconducting contacts. Comment: 4 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.100.121403 |
| URL الوصول: | http://arxiv.org/abs/1904.11689 |
| رقم الأكسشن: | edsarx.1904.11689 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.100.121403 |
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