论文信息 - Ba/sub 1-X/K/sub X/BiO/sub 3/ grain boundary junctions prepared on SrTiO/sub 3/ bicrystal substrates

Ba/sub 1-X/K/sub X/BiO/sub 3/ grain boundary junctions prepared on SrTiO/sub 3/ bicrystal substrates

We succeeded in the fabrication of Ba/sub 1-X/K/sub X/BiO/sub 3/ artificial grain boundary junctions prepared on SrTiO/sub 3/ bicrystal substrates. These junctions showed the Josephson current and the energy gap structure in the I-V characteristics. In a magnetic field, the critical current was modulated and the I/sub c/-B curve showed a clear Fraunhofer pattern. Fiske steps were also observed in the I-V characteristics. In the radiation of 10.5 GHz microwaves, Shapiro steps were observed.<<ETX>>

H. Hayakawa | A. Fujimaki | M. Inoue | S. Imaeda

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