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Article Dans Une Revue Applied Physics Letters Année : 2014

Nano-superconducting quantum interference devices with suspended junctions

Dibyendu Hazra
  • Fonction : Auteur
Klaus Hasselbach

Résumé

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.
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Dates et versions

hal-00980708 , version 1 (18-04-2014)

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Citer

Dibyendu Hazra, John R. Kirtley, Klaus Hasselbach. Nano-superconducting quantum interference devices with suspended junctions. Applied Physics Letters, 2014, 104 (15), pp.152603. ⟨10.1063/1.4871317⟩. ⟨hal-00980708⟩

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