Fabrication and properties of superconducting single crystal cross-(micro) whiskers junction


ALTIN S., YAKINCI M. E., Aksan M. A., BALCI Y.

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, cilt.460, ss.1337-1338, 2007 (SCI-Expanded) identifier identifier

Özet

Superconducting single crystal Bi-2212 (micro)whiskers have been fabricated by annealing a glass Bi2Sr2Ca2Cu3Ox precursor. The T, and T-zero of similar to 20 mm long and 10-70 mu m wide single crystal whiskers were found to be 85 K and 82 K, respectively. The critical current density J(ctransport) of the whiskers was calculated to be 1313 A cm(-2) at 0 T and 10 K. Then, a couple of whiskers were placed cross-wise on khe YSZ single crystal substrate and heat treated to form micro-scale junction. The I-V characteristics of the micro-junction at 10, 30 and 60 K were found to show a multiple branch structure and that confirms to a model based on intrinsic Josephson junction. (c) 2007 Elsevier B.V. All rights reserved.