A nanoscale SQUID operating at high magnetic fields

Lam, Simon K. H., Clem, John R. and Yang, Wenrong 2011, A nanoscale SQUID operating at high magnetic fields, Nanotechnology, vol. 22, no. 45, pp. 1-5.

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Title A nanoscale SQUID operating at high magnetic fields
Author(s) Lam, Simon K. H.
Clem, John R.
Yang, WenrongORCID iD for Yang, Wenrong orcid.org/0000-0001-8815-1951
Journal name Nanotechnology
Volume number 22
Issue number 45
Start page 1
End page 5
Total pages 5
Publisher Institute of Physics Publishing
Place of publication Bristol, Endland
Publication date 2011-11-11
ISSN 0957-4484
Keyword(s) applied field
high magnetic fields
nano scale
nano-scale objects
theoretical prediction
vortex penetration
zero fields
Summary A washer-free Nb nanoSQUID has been developed for measuring magnetization changes from nanoscale objects. The SQUID loop is etched into a 250 nm wide Au/Nb bilayer track and the diameter of the SQUID hole is ~ 70 nm. In the presence of a magnetic field perpendicular to the plane of the SQUID, vortex penetration into the 250 nm wide track can be observed via the critical current–applied field characteristic and the value at which vortex first penetrates is consistent with the theoretical prediction. Upon removing the applied field, the penetrated vortices escape the track and the critical current at zero field is restored.
Language eng
Field of Research 069999 Biological Sciences not elsewhere classified
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2011, IOP Publishing Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30048122

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