Fabrication and properties of high- Tc YBCO josephson junction and SQUID with variable thickness bridges by focused ion beam

Chiu Hsien Wu*, Fong Jyun Jhan, Jau Han Chen, Jen Tzong Jeng, Kuen Lin Chen, Hong Chang Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

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 languageEnglish
Article number5699961
Pages (from-to)375-378
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume21
Issue number3 PART 1
DOIs
Publication statusPublished - 2011 Jun

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

Fingerprint

Dive into the research topics of 'Fabrication and properties of high- Tc YBCO josephson junction and SQUID with variable thickness bridges by focused ion beam'. Together they form a unique fingerprint.

Cite this