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Title: Fabrication and analogue applications of nanoSQUIDs using Dayem bridge junctions
Authors: Hao, L
Cox, DC
Gallop, JC
Chen, J
Keywords: Nanomagnetism;NanoSQUIDs;NEMS mechanical resonators;Single particle detection
Issue Date: 2015
Publisher: Institute of Electrical and Electronics Engineers Inc.
Citation: IEEE Journal on Selected Topics in Quantum Electronics, 21(2): (MArch-April 2015)
Abstract: We report here recent work at the U.K. National Physical Laboratory on developing nanoscale SQUIDs using Dayem bridge Josephson junctions. The advantages are simplicity of fabrication, exceptional low-noise performance, toward the quantum limit, and a range of novel applications. Focused ion beam patterned Nb SQUID, possessing exceptionally low noise (∼200 nΦ0/Hz1/2 above 1 kHz), and operating above 4.2 K can be applied to measurement of nanoscale magnetic objects or coupled to nanoelectromechanical resonators, as well as single particle detection of photons, protons, and ions. The limited operating temperature range may be extended by exposing the Dayem bridges to carefully controlled ion beam implantation, leading to nonreversible changes in junction transition temperature.
ISSN: 1077-260X
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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