Laterally proximized aluminum tunnel junctions

Details Laterally proximized aluminum tunnel junctions Laterally proximized aluminum tunnel junctions

2011-04-15

arxiv.org/abs/1104.3052v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

This letter presents experiments on junctions fabricated by a new technique that enables the use of high quality aluminum oxide tunnel barriers with normal metal electrodes at low temperatures. Inverse proximity effect is applied to diminish the superconductivity of an aluminum dot through a clean lateral connection to a normal metal electrode. To demonstrate the effectiveness of this method, fully normal-state single electron transistors (SET) and normal metal-insulator-superconductor (NIS) junctions applying proximized Al junctions were fabricated. The transport characteristics of the junctions were similar to those obtained from standard theoretical models of regular SETs and NIS junctions.

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