Published April 14, 2014 | Version v1
Journal article Metadata-only

Nano-superconducting quantum interference devices with suspended junctions

Creators

  • 1. Institut Néel, CNRS and Université Joseph Fourier, 25 Avenue des Martyrs, Grenoble (France)
  • 2. Center for Probing the Nanoscale, Stanford University, Palo Alto, California 94305-4045 (United States)

Description

Nano-Superconducting Quantum Interference Devices (nano-SQUIDs) are usually fabricated from a single layer of either Nb or Al. We describe here a simple method for fabricating suspended nano-bridges in Nb/Al thin-film bilayers. We use these suspended bridges, which act as Josephson weak links, to fabricate nano-SQUIDs which show critical current oscillations at temperatures up to 1.5 K and magnetic flux densities up to over 20 mT. These nano-SQUIDs exhibit flux modulation depths intermediate between all-Al and all-Nb devices, with some of the desirable characteristics of both. The suspended geometry is attractive for magnetic single nanoparticle measurements

Additional details

Identifiers

DOI
10.1063/1.4871317;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
104
Journal Issue
15
Journal Page Range
p. 152603-152603.4
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45083836
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CRITICAL CURRENT; FLUX DENSITY; MAGNETIC FLUX; NANOSTRUCTURES; OSCILLATIONS; SQUID DEVICES; THIN FILMS
Descriptors DEC
CURRENTS; ELECTRIC CURRENTS; ELECTRONIC EQUIPMENT; EQUIPMENT; FILMS; FLUXMETERS; MEASURING INSTRUMENTS; MICROWAVE EQUIPMENT; SUPERCONDUCTING DEVICES

Optional Information

Notes
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