Abstract
We demonstrate a high-temperature superconductor (HTS) Josephson junction geometry using only in situ interfaces and with the current flowing in the a-b plane of the HTS. The trilayer on a substrate slope (TOSS) junction is a HTS-barrier-HTS structure deposited in situ on top of a pre-etched slope in the substrate. We present initial results on the fabrication and testing of YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// TOSS junctions with a Ga-doped PrBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// barrier. These devices display resistively shunted junction like I-V characteristics with characteristic voltages up to 5 mV at 4.2 K. The TOSS junction concept is of interest for fundamental studies of interfaces in HTS and can also be applied to an integrated circuit technology.
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