Fabrication of Bi2212 Cross Whiskers Junction
Yoshihiko Takano, Takeshi Hatano, Akira Ishii, Akihiro Fukuyo, Yoshimasa Sato, Shunichi Arisawa, Kazumasa Togano
Abstract
An intrinsic Josephson junction has been successfully fabricated without any micro-fabrication technique. Two Bi2212 whiskers were crossed with one another and joined by post-annealing. The inter-whisker electrical transport properties were measured by the four-probe method. The temperature dependence of resistance exhibited metallic behavior above TC. The resistance decreased to zero around 80K, corresponding to the superconducting transition. The current-voltage characteristics at 5K exhibited a small hysteresis and voltage jump, which can be explained by the intrinsic Josephson effect.
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