CRITICAL-CURRENT CHARACTERISTICS OF PARALLEL-ARRAYED HOBA2CU3OX NANOBRIDGES

Parallel-arrayed HoBa2Cu3Ox (HBCO) nanobridges are fabricated and thei r critical-current characteristics are investigated. Dependence of the critical-current density on temperature does not differ among bridges having different widths. No weak link behavior is observed under micr owave irradiation and a magnetic field, even for a sample as small as 0.1 mu m wide and 12 nm thick. The critical-current density is found t o be limited by flux creep as in much wider HBCO thin films. Therefore , it may be possible to apply HBCO thin films to nanometer-scale super conducting wiring without any problems caused by weak link behavior.