Title :
Edge-like planar sandwich-type junctions using a-axis oriented YBa/sub 2/Cu/sub 3/O/sub 7-x//insulator/YBa/sub 2/Cu/sub 3/O/sub 7-x/ trilayers
Author :
Gun Yong Sung ; Jeong Dae Suh
Author_Institution :
Electron. & Telecommun. Res. Inst., Taejon, South Korea
fDate :
6/1/1997 12:00:00 AM
Abstract :
We have fabricated the in-plane aligned a-axis oriented YBa/sub 2/Cu/sub 3/O/sub 7-x//LaSrGaO/sub 4//YBa/sub 2/Cu/sub 3/O/sub 7-x/ (YBCO/LSGO/YBCO) heteroepitaxial trilayers on LSGO (100) substrates. A LSGO insulating barrier and top YBCO layer were grown on the ion-beam etched in-plane aligned, a-axis oriented YBCO bottom layer. Superconductor-insulator-superconductor edge-like planar sandwich-type junctions using these a-axis oriented YBCO/LSGO/YBCO trilayers had a superconducting transition temperature of 84 K and revealed flux-flow type I-V characteristics.
Keywords :
Josephson effect; barium compounds; flux flow; high-temperature superconductors; superconducting epitaxial layers; superconducting transition temperature; yttrium compounds; I-V characteristics; LSGO(100) substrate; SIS junction; YBCO/LSGO/YBCO heteroepitaxial trilayer; YBa/sub 2/Cu/sub 3/O/sub 7/-LaSrGaO/sub 4/-YBa/sub 2/Cu/sub 3/O/sub 7/; a-axis orientation; edge-like planar sandwich-type junction; flux flow; in-plane alignment; ion beam etching; superconducting transition temperature; superconductor-insulator-superconductor junction; Electrodes; Fabrication; High temperature superconductors; Insulation; Ion beams; Pulsed laser deposition; Superconducting materials; Superconducting transition temperature; Superconducting transmission lines; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
