This title appears in the Scientific Report :
2004
Please use the identifier:
http://dx.doi.org/10.1088/0953-2048/17/5/057 in citations.
Analysis of Electrical Characteristics and Magnetic Field Dependencies of YBCO Step Edge and Bi-crystal Grain Boundary Junctions for rf-SQUID Applications
Analysis of Electrical Characteristics and Magnetic Field Dependencies of YBCO Step Edge and Bi-crystal Grain Boundary Junctions for rf-SQUID Applications
The dc characteristics and magnetic field dependences of Y-Ba-Cu-O bicrystal grain boundary junctions (BGBJs) and step edge junctions (SEJs) were Investigated for fabrication of rf-SQUIDs. Test junctions with up to 8 mum widths as well as the junctions of the two types of junction-based rf-SQUID wer...
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Personal Name(s): | Fardmanesh, M. |
---|---|
Schubert, J. / Akram, R. / Bick, M. / Banzet, M. / Zander, W. / Zhang, Y. / Krause, H.-J. | |
Contributing Institute: |
Institut für Bio- und Chemosensoren; ISG-2 Center of Nanoelectronic Systems for Information Technology; CNI Institut für Halbleiterschichten und Bauelemente; ISG-1 |
Published in: | Superconductor science and technology, 17 (2004) S. s375 - s380 |
Imprint: |
Bristol
IOP Publ.
2004
|
Physical Description: |
s375 - s380 |
DOI: |
10.1088/0953-2048/17/5/057 |
Document Type: |
Journal Article |
Research Program: |
Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik |
Series Title: |
Superconductor Science and Technology
17 |
Subject (ZB): | |
Publikationsportal JuSER |
The dc characteristics and magnetic field dependences of Y-Ba-Cu-O bicrystal grain boundary junctions (BGBJs) and step edge junctions (SEJs) were Investigated for fabrication of rf-SQUIDs. Test junctions with up to 8 mum widths as well as the junctions of the two types of junction-based rf-SQUID were studied. The SEJs typically showed lower J(c) and higher rho(N) as compared to the BGBJs, resulting in close IcRN products. All the BGBJs showed classical field dependent I-c following their junction width, resembling Fraunhofer patterns. The field sensitivity of the BGBJs' I-c led to low yield submicron BGBJ rf-SQUIDs partially impaired by the Earth's magnetic field. Two major behaviours of low and high field dependences of I-c were observed for the SEJs. Only the low field-sensitive SEJs resulted in micron size junction rf-SQUIDs not impaired by the Earth's magnetic field. The low field-sensitive SEJs led to low 1/f noise magnetically stable rf-SQUIDs appropriate for applications in unshielded environments at 77 K. |