Fabrication of Intrinsic Josephson Junctions on Bi2 Sr2 CaCu2 O8+δ Single Crystals with Reproducible Surface Junctions
ZHU Xiao-Bo, ZHAO Shi-Ping, CHEN Geng-Hua, XIE Si-Shen, YANG Qian-Sheng
Institute of Physics and Center for Condensed Matter Physics,
Chinese Academy of Sciences, Beijing 100080
Fabrication of Intrinsic Josephson Junctions on Bi2 Sr2 CaCu2 O8+δ Single Crystals with Reproducible Surface Junctions
ZHU Xiao-Bo;ZHAO Shi-Ping;CHEN Geng-Hua;XIE Si-Shen;YANG Qian-Sheng
Institute of Physics and Center for Condensed Matter Physics,
Chinese Academy of Sciences, Beijing 100080
关键词 ：
74.50.+r ,
74.72.Hs ,
74.80.Dm
Abstract ： Intrinsic Josephson junctions on Bi2 Sr2 CaCu2 O8+δ single crystals are successfully fabricated using photolithography and Ar ion milling. Here we discuss the properties of the surface CuO2 /metal bilayers and surface junctions prepared with different crystal cleavage conditions and metal film deposition techniques. We show that by cleaving the crystal at liquid nitrogen temperature in vacuum, the contents of the (interstitial) oxygen in the Bi-O layers become stable upon cleavage, leading to a CuO2 /metal bilayer and to surface junctions with reproducible properties. These results can be useful for practical device fabrications as well as for the studies of the contact properties between high Tc superconductors and normal metals.
Key words ：
74.50.+r
74.72.Hs
74.80.Dm
出版日期: 2002-12-01
引用本文:
ZHU Xiao-Bo;ZHAO Shi-Ping;CHEN Geng-Hua;XIE Si-Shen;YANG Qian-Sheng. Fabrication of Intrinsic Josephson Junctions on Bi2 Sr2 CaCu2 O8+δ Single Crystals with Reproducible Surface Junctions[J]. 中国物理快报, 2002, 19(12): 1859-1862.
2 Sr2 CaCu2 O8+δ Single Crystals with Reproducible Surface Junctions. Chin. Phys. Lett., 2002, 19(12): 1859-1862.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2002/V19/I12/1859
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