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26 April 2024 |
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A Cross-Whiskers Junction as a Novel Fabrication Process for Intrinsic Josephson Junction | | Yoshihiko Takano
; Takeshi Hatano
; Akihiro Fukuyo
; Akira Ishii
; Shunichi Arisawa
; Masashi Tachiki
; Kazumasa Togano
; | | Date: |
16 Apr 2002 | | Journal: | Supercond. Sci. Technol. 14 (2001) 765 | | Subject: | Superconductivity | cond-mat.supr-con | | Abstract: | A Bi2Sr2CaCu2O8+d cross-whiskers junction has been successfully discovered as a novel intrinsic Josephson junction without using any technique for micro-fabrication. Two Bi2Sr2CaCu2O8+d whisker crystals were placed crosswise on a MgO substrate and heated at 850C for 30 min. They were electrically connected at their c-planes. The measurement terminals were made at the four ends of the whiskers. The I-V characteristics of the cross-whiskers junction at 5K were found to show a clear multiple-branch structure with a spacing of approximately 15 mV that is a feature of the intrinsic Josephson junction. The critical current density Jc was estimated to be 1170 A/cm2. The branch-structure was strongly suppressed by the magnetic field above 1kOe. | | Source: | arXiv, cond-mat/0204343 | | Services: | Forum | Review | PDF | Favorites | |
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