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1. (WO2017037436) SUPERCONDUCTING DEVICE AND METHOD OF MANUFACTURING A SUPERCONDUCTING DEVICE

Pub. No.:    WO/2017/037436    International Application No.:    PCT/GB2016/052664
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Aug 27 01:59:59 CEST 2016
IPC: G01R 33/035
Applicants: ROYAL HOLLOWAY AND BEDFORD NEW COLLEGE
Inventors: PETRASHOV, Victor Tikhonovich
CHECKLEY, Christopher
Title: SUPERCONDUCTING DEVICE AND METHOD OF MANUFACTURING A SUPERCONDUCTING DEVICE
Abstract:
A quantum interference device comprising a superconducting loop interrupted by a normal conductor segment, and an interferometer connected to the normal conductor segment wherein the superconducting loop comprises a plurality of turns. The turns can be a plurality of adjacent lobes. A coil can be located within a lobe of the superconducting loop. Optionally a bridge layer (e.g. of gold) is formed above the substrate to make an electrical contact between a superconducting layer (e.g. of niobium) formed above the bridge layer and a normal conducting layer (e.g. of titanium) formed above the bridge layer. The bridge layer allows the device to be formed of superconducting and normal conducting materials that are otherwise incompatible. A titanium normal conducting layer can be allowed to oxidise over a period of years.