High Tc Superconductor - Silicon on Sapphire CMOS Hybrid Circuit

By exploiting previous work on the growth of YBCO and Josephson junctions on buffered sapphire, Conductus will combine silicon CMOS on sapphire with high temperature superconductors, all on a single chip. Conductus will test the ability of the Si MOS devices to withstand the subsequent YBCO processes. Chips will then be tested to determine the effects of the additional processing on the active Si devices. Finally, Conductus will demonstrate the utility of this hybrid technology by fabricating a simple YBCO/SOS-CMOS circuit incorporating simple YBCO interconnects and active Si devices. The entire project requires no breakthroughs in either YBCO technology or SOS-MOS technology in order to produce the proposed hybrid chips. Such chips may prove extremely valuable for the next generation of supercomputers.