Balanced double-loop mesoscopic interferometer based on Josephson proximity nanojunctions

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

Research output: Contribution to journalArticleScientificpeer-review

5 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

Fingerprint

proximity
interferometers
Josephson junctions
critical current
masks
lithography
asymmetry
electron beams
fabrication
rings
cross sections
thin films
geometry

Cite this

@article{aad1a68e68e84305bf64088f464be048,
title = "Balanced double-loop mesoscopic interferometer based on Josephson proximity nanojunctions",
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.",
author = "Alberto Ronzani and Carles Altimiras and Francesco Giazotto",
year = "2014",
month = "1",
day = "20",
doi = "10.1063/1.4862477",
language = "English",
volume = "104",
journal = "Applied Physics Letters",
issn = "0003-6951",
number = "3",

}

Balanced double-loop mesoscopic interferometer based on Josephson proximity nanojunctions. / Ronzani, Alberto (Corresponding Author); Altimiras, Carles; Giazotto, Francesco.

In: Applied Physics Letters, Vol. 104, No. 3, 032601, 20.01.2014.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Balanced double-loop mesoscopic interferometer based on Josephson proximity nanojunctions

AU - Ronzani, Alberto

AU - Altimiras, Carles

AU - Giazotto, Francesco

PY - 2014/1/20

Y1 - 2014/1/20

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84893367718&partnerID=8YFLogxK

U2 - 10.1063/1.4862477

DO - 10.1063/1.4862477

M3 - Article

VL - 104

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 3

M1 - 032601

ER -