High- [Formula Omitted] Dual-SQUIDs With Graphoepitaxial Step-Edge Junctions

The microstructural and noise properties of serially connected high- [Formula Omitted] dc superconducting quantum interferometer devices (high- [Formula Omitted] dc SQUIDs) with step-edge Josephson junctions are studied. It is shown that the implementation of novel graphoepitaxial step-edge Josephso...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2016-01, Vol.26 (3), p.1
Main Authors: Faley, M I, V Yu Slobodchikov, Maslennikov, Yu V, Koshelets, V P, Dunin-Borkowski, R E
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The microstructural and noise properties of serially connected high- [Formula Omitted] dc superconducting quantum interferometer devices (high- [Formula Omitted] dc SQUIDs) with step-edge Josephson junctions are studied. It is shown that the implementation of novel graphoepitaxial step-edge Josephson junctions on buffered MgO substrates helps to overcome poor reproducibility of conventional step-edge high- [Formula Omitted] Josephson junctions due to the self-arranged growth of two identical [100]-tilted 45 [Formula Omitted] grain boundaries over a wide range of step heights. The use of such Josephson junctions in two serially connected SQUIDs that are directly coupled to a common pickup loop in a dual-SQUID configuration with current biasing of the individual SQUIDs results in a doubling of voltage swings and an improvement in magnetic field resolution of the sensors.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2016.2515841