Abstract
The current-voltage and derivative resistance-voltage characteristics in the direction of the c-axis of (Bi,Pb)2Sr2CaCu20x single crystals have been measured by means of a modified point contact junction. Both energy gap-like structure and the multiple branches are successfully observed on the 1-V characteristics. The gap parameter along the c-direction, ~, is estimated to be 10-40meV for 4.2K and have a BCS-like temperature dependence. The observed multiple branches imply the intrinsic Josephson coupling between the superconducting block layers separated by the insulating and/or normal layers in the single crystals.
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CITATION STYLE
Irie, A., Aoyama, N., Sakakibara, M., Oya, G., Kishida, S., & Tokutaka, H. (1993). Current-Voltage Characteristics of Nb/(Bi, Pb)2Sr2CaCu2Ox/Nb Point Contact Junctions. In Advances in Superconductivity V (pp. 85–88). Springer Japan. https://doi.org/10.1007/978-4-431-68305-6_17
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