Fabrication of Bi-Sr-Ca-Cu-O / Barrier / Bi-Sr-Ca-Cu-O Junction by Treatment with Carbonated Water (Special Issue on High-Temperature Superconducting Electronics)

概要

論文の詳細を見る
The barrier-layer was successfully fabricated for a preparation of tunneling junction using high T_c oxide-superconductor such as Bi-Sr-Ca-Cu-O system. Bi_2Sr_2Ca_2Cu_3O_x films were used for both superconducting electrodes and the barrier was mainly Bi_2Sr_2CaCu_2O and the rest that was formed by effects of de-calcium from the first sputtered (2223) film. The reaction of de-calcium occurred immersing it in carbonated water. The change of (2223) phase of BSCCO was confirmed with a comparison of the intensity of X-ray diffraction. The superconductive transition temperature of the junction is different from that of the single film (2223) which had no treatment with carbonated water. Zero-bias-currents through fabricated barrier are observed and the critical currents depend on temperature so far as measured temperature region of 79 K- K.
社団法人電子情報通信学会の論文
1993-08-25