Intrinsic Josephson junctions on high-quality BSCCO-2212/2223 superlattice thin films grown by MOCVD

K. Endo, H. Sato, T. Yoshizawa, K. Abe, J. Itoh, K. Kajimura, H. Akoh

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the successful preparation of intrinsic Josephson junctions on high-quality BSCCO-2212/2223 superlattice thin films grown by MOCVD. The surface of as-grown films was very smooth with the roughness of the order of a half unit cell. Mesas were effectively structured on the film by the liquid-nitrogen-cooled dry etching method. A typical I-V characteristic in the c-axis direction of a BSCCO film shows the hysteresis and multiple resistive branches. The number of branches is consistent with that of junctions calculated from the height of a mesa structure. This indicates that BSCCO-2212/2223 superlattice films consist of a series array of S(CuO2 bilayer)/I(SrO, BiO layers)/S(CuO2 trilayer) junction. The formation of stacked Josephson junctions was also confirmed by the temperature dependence and the magnetic field dependence of Ic.

Original languageEnglish
Pages (from-to)169-174
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume689
Publication statusPublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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