YBa sub 2 Cu sub 3 O sub 7 Superconductors for High-Speed Interconnects

We measure the surface resistance of high quality YBa sub 2 Cu sub 3 O sub 7 superconducting films over a wide frequency range from 10 GHz using high-speed opto-electronic techniques. A direct comparison is made with the surface resistance of gold and superconducting niobium conductors. Using the measured surface resistance, the propagation characteristic of interconnects based on YBa sub 2 Cu sub 3 O sub 7 conductors at 77K is simulated and compared to gold transmission lines at 77K and niobium lines at 7.7K.