Fabrication and properties of high- T c 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

Research output: Contribution to journalArticle

6 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- T c YBa 2 Cu 3 O y 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 1

Fingerprint

Focused ion beams
SQUIDs
Josephson junctions
ion beams
Fabrication
magnetometers
fabrication
electric potential
Magnetometers
Electric potential
Josephson effect
photolithography
thick films
Photolithography
Thick films
thin films
Thin films

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

Cite this

Fabrication and properties of high- T c YBCO josephson junction and SQUID with variable thickness bridges by focused ion beam . / Wu, Chiu Hsien; Jhan, Fong Jyun; Chen, Jau Han; Jeng, Jen Tzong; Chen, Kuen Lin; Yang, Hong-Chang.

In: IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3 PART 1, 5699961, 01.06.2011, p. 375-378.

Research output: Contribution to journalArticle

Wu, Chiu Hsien ; Jhan, Fong Jyun ; Chen, Jau Han ; Jeng, Jen Tzong ; Chen, Kuen Lin ; Yang, Hong-Chang. / Fabrication and properties of high- T c YBCO josephson junction and SQUID with variable thickness bridges by focused ion beam In: IEEE Transactions on Applied Superconductivity. 2011 ; Vol. 21, No. 3 PART 1. pp. 375-378.
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