The Contact Resistance of the YBa2Cu3O7-δ-Metal Film System

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概要

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• The electrical properties and X-ray photoelectron spectroscopy (XPS) of Y1Ba2Cu3O7-δ (YBCO) contacts formed by Ag, Au, Sn, Zn, In and Al metal films have been studied. The Cu, In, Zn and Sn film contacts show high resistivities with semiconductive temperature dependence. The Au, Ag, and Pt film contacts have low resistivities with metallic temperature dependence. The XPS analyses show that Sn and Al react with the oxygen on the YBCO surface. However, little change in copper and oxygen states can be observed in Ag/YBCO and Au/YBCO systems. It is assumed that the oxygen-deficient layer at the interfaces of Sn/YBCO and Al/YBCO systems makes the contact resistance high, while the semiconductive layer is insignificant at the Ag/YBCO and Au/YBCO interfaces, and their resistance is low. Analyses indicate that Ag/YBCO and Au/YBCO systems provide very effective ohmic contacts.

• INSTITUTE OF PURE AND APPLIED PHYSICSの論文
• 1989-12-20

著者

• Aoki Akira

  Osaka Prefectural Industrial Reseach Institute Enkojima

• KUSAKA Tadaoki

  Osaka Prefectural Industrial Technology Research Institute

• SUZUKI Yoshihiko

  Osaka Prefectural Industrial Technology Research Institute

• AOYAMA Takahiro

  Daihen Co.

• Yotsuya Tsutom

  Osaka Prefectural Industrial Technology Research Insitute

• OGAWA Soichi

  Osaka Prefectural Industrial Technology Research Institute

• Suzuki Yoshihiko

  Osaka Prefectural Industrial Technology Research Institute, 2-1-53 Enokojima, Nishiku, Osaka 550

• Aoki Akira

  Osaka Prefectural Industrial Technology Research Institute, 2-1-53 Enokojima, Nishiku, Osaka 550

• Aoyama Takahiro

  Daihen Co., Tagawa, Yodogawaku, Osaka 532

• Yotsuya Tsutom

  Osaka Prefectural Industrial Technology Research Institute, 2-1-53 Enokojima, Nishiku, Osaka 550

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