Balanced double-loop mesoscopic interferometer based on Josephson proximity nanojunctions

Alberto Ronzani (Corresponding Author), Carles Altimiras, Francesco Giazotto

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

We report on the fabrication and characterization of a two-terminal mesoscopic interferometer based on three V/Cu/V Josephson junctions having nanoscale cross-section. The junctions have been arranged in a double-ring geometry realized by metallic thin film deposition through a suspended mask defined by electron beam lithography. Although a significant amount of asymmetry between the critical current of each junction is observed, we show that the interferometer is able to suppress the supercurrent to a level lower than 6 parts per thousand, being here limited by measurement resolution. The present nano-device is suitable for low-temperature magnetometric and gradiometric measurements over the micrometric scale.

Original languageEnglish
Article number032601
JournalApplied Physics Letters
Volume104
Issue number3
DOIs
Publication statusPublished - 20 Jan 2014
MoE publication typeA1 Journal article-refereed

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