Fabrication of Thin-Film YBCO Josephson Junctions by Excimer Laser Irradiation

Jian CHEN; Takashi NOZUE; Yoshiyuki KIYOSAWA; Hajime SUZUKI; Tsutomu YAMASHITA; Yoshizumi YASUOKA

doi:10.2184/lsj.19.7_627

Jian CHEN, Takashi NOZUE, Yoshiyuki KIYOSAWA, Hajime SUZUKI, Tsutomu YAMASHITA, Yoshizumi YASUOKA

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Keywords: Josephson junction, High Tc supercondutor, Y-Ba-Cu-O film, Excimer laser

JOURNAL FREE ACCESS

1991 Volume 19 Issue 7 Pages 627-633

DOI https://doi.org/10.2184/lsj.19.7_627

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Abstract

Josephson junctions of high-T_c Y-Ba-Cu-O films have been successfully fabricated by ablating the films with a pulsed excimer laser. No degradation of the resistance-vs. -temperature characteristics of the films due to the laser ablation was found. The effect of radio frequency irradiation was investigaed at 77K. Clear Shapiro steps were observed under the microwave (8GHz) and millimeter-wave (94GHz) irradiation.

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