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d-like Symmetry of the Order Parameter and Intrinsic Josephson Effects in Bi2212 Cross-Whisker Junctions

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arxiv cond-mat/0212143 v1 pith:DNJEF7LZ submitted 2002-12-06 cond-mat.supr-con

Yoshihiko Takano , Takeshi Hatano , Akihiro Fukuyo , Akira Ishii , Masashi Ohmori , Shunichi Arisawa , Kazumasa Togano , Masashi Tachiki This is my paper · ORCID
classification cond-mat.supr-con
keywords intrinsicangularcross-anglecurrentd-wavedependencejosephsonjunction
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An intrinsic tunnel junction was made using two Bi-2212 single crystal whiskers. The two whiskers with a cross-angle were overlaid at their c-planes and connected by annealing. The angular dependence of the critical current density along the c-axis is of the d-wave symmetry. However, the angular dependence is much stronger than that of the conventional d-wave. Furthermore, the current vs. voltage characteristics of the cross-whiskers junctions show a multiple-branch structure at any cross-angle, indicating the formation of the intrinsic Josephson junction array.

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