Approaching ideal weak link behavior with three dimensional aluminum nanobridges

Details Approaching ideal weak link behavior with three dimensional aluminum nanobridges Approaching ideal weak link behavior with three dimensional aluminum nanobridges

2010-05-07

arxiv.org/abs/1005.1110v1

Appl. Phys. Lett. 96, 223112 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 4 figures

Scientific paper

We present transport measurements of unshunted dc superconducting quantum interference devices (SQUIDs) consisting of 30 nm wide aluminum nanobridges of varying length L contacted with two and three dimensional banks. 3D nanobridge SQUIDs with L $\leq$ 150 nm (approximately 3-4 times the superconducting coherence length) exhibit $\approx 70%$ critical current modulation with applied magnetic field, approaching the theoretical limit for an ideal short metallic weak link. In contrast, 2D nanobridge SQUIDs exhibit significantly lower critical current modulation. This enhanced nonlinearity makes 3D nanobridge Josephson junctions well suited to optimize sensitivity in weak link SQUID magnetometers as well as realize ultra low-noise amplifiers and qubits.

Affiliated with

Also associated with

No associations

Rating

Approaching ideal weak link behavior with three dimensional aluminum nanobridges does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Approaching ideal weak link behavior with three dimensional aluminum nanobridges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Approaching ideal weak link behavior with three dimensional aluminum nanobridges will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-221935