Abstract
We have successfully fabricated YBCO Josephson junctions and SQUIDs with variable thickness bridges. The variable-thickness bridges of YBCO thin film were fabricated by photolithography and Focused ion beam mill. The Josephson effects of variable thickness bridges were obtained in a 80 nm-thick-film of high- Tc YBa2Cu3Oy The Shapiro steps were observed in single junction in the gigahertz range from 3.02 to 14.64 GHz. The voltage-current and voltage-field characteristics were measured in SQUID magnetometer. The SQUID shows a peak-to-peak voltage swing of 1.5 μV at 70 K. The properties of one junction and SQUID magnetometer have been investigated.
Original language | English |
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Article number | 5699961 |
Pages (from-to) | 375-378 |
Number of pages | 4 |
Journal | IEEE Transactions on Applied Superconductivity |
Volume | 21 |
Issue number | 3 PART 1 |
DOIs | |
Publication status | Published - 2011 Jun 1 |
Keywords
- Focused ion beam
- Josephson junction
- Variable thickness bridges
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering