Title :
Ba/sub 1-X/K/sub X/BiO/sub 3/ grain boundary junctions prepared on SrTiO/sub 3/ bicrystal substrates
Author :
Imaeda, S. ; Inoue, M. ; Fujimaki, A. ; Hayakawa, H.
Author_Institution :
Dept. of Electron., Nagoya Univ., Japan
fDate :
6/1/1995 12:00:00 AM
Abstract :
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.<>
Keywords :
Josephson effect; barium compounds; bicrystals; critical currents; grain boundaries; high-temperature superconductors; potassium compounds; superconducting energy gap; 10.5 GHz; Ba/sub 1-X/K/sub X/BiO/sub 3/ grain boundary junctions; BaKBiO/sub 3/; Fiske steps; Fraunhofer pattern; I-V characteristics; Josephson current; Shapiro steps; SrTiO/sub 3/; SrTiO/sub 3/ bicrystal substrates; critical current; energy gap; fabrication; magnetic field; microwave irradiation; Argon; Grain boundaries; Ion beams; Josephson effect; Magnetic fields; Powders; RNA; Sputtering; Substrates; Temperature;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
