Fabrication of superconducting d-wave dot embedded in an s-wave matrix

Masaki Fujii, Taiji Abe, Hirokazu Yoshikawa, Shigehito Miki, Shuichi Kawamata, Kazuo Satoh, Tsutomu Yotsuya, Masaru Kato, Masahiko Machida, Tomio Koyama, Takahito Terashima, Shigeki Tsukui, Motoaki Adachi, Takekazu Ishida

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)


When a d-wave superconducting dot (d-dot) is embedded in an s-wave superconductor matrix, a half flux quantum vortex is expected to appear spontaneously at four corners of the d-dot without applying an external magnetic field. First, we have prepared c-axis oriented YBa 2Cu 3O 7 (d-wave superconductor) thin films by pulsed-laser ablation deposition on c-axis oriented SrTiO 3 single-crystal substrates. We have fabricated resist-coated YBa 2Cu 3O 7 square islands by using an electron beam lithography and an electron cyclotron resonance etching. Then, we have deposited Pb (s-wave superconductor) film on the fabricated YBa 2Cu 3O 7 thin film, and removed extra Pb and resist films on the YBa 2Cu 3O 7 islands by a lift-off technique. Magnetic field distribution on superconducting d-dot has been measured by using a SQUID microscope in zero fields.

Original languageEnglish
Pages (from-to)104-107
Number of pages4
JournalPhysica C: Superconductivity and its applications
Issue numberI
Publication statusPublished - 2005 Oct 1
EventProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
Duration: 2004 Nov 232004 Nov 25


  • Half flux quantum vortex
  • SQUID microscope
  • YBa Cu O thin film
  • d-Dot

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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