A Cross-Whiskers Junction as a Novel Fabrication Process for Intrinsic Josephson Junction

Details A Cross-Whiskers Junction as a Novel Fabrication Process for Intrinsic Josephson Junction A Cross-Whiskers Junction as a Novel Fabrication Process for Intrinsic Josephson Junction

2002-04-16

arxiv.org/abs/cond-mat/0204343v1

Supercond. Sci. Technol. 14 (2001) 765

Physics

Condensed Matter

Superconductivity

4 pages, PDF file

Scientific paper

10.1088/0953-2048/14/9/327

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.

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