SCENET roadmap for superconductor digital electronics

The Irreversibility Fields of (Tl0.5Pb0.5) (Sr0.85Ba0.15)2Ca2Cu3OzFilm on Polished Silver Substrate

“…These materials are good candidates for the fabrication of the second generation of HTS tapes (coated conductors) as well as for the fabrication of the microwave filters for wireless telecommunication [1]. Unique properties of superconducting devices like an extremely small energy consumption and a picosecond range switching speed force to develop so-called superconductor digital (737) electronics which can also use thallium base HTS [2]. The wide researches on lead doped thallium superconductors (Tl-1223) showed that critical current densities of more than 10 6 A/cm 2 may be achieved for Tl-1223 films on single-crystalline lanthanum aluminate as substrate [3][4][5][6].…”

Josephson Junctions for Present and Next Generation Voltage Metrology

“…RSFQ has been, and still remains, a very active field of research for quantum digital electronics applications [19], yet developments for voltage standards have always been left out of the mainstream of research interests in Metrology. One of the main reasons for that is most likely to be found in the completely different approach, know-how and experiences involved by RSFQ, with respect to the common background of voltage metrologist.…”

“…The need of the temperature stability means that small temperature variations should cause only small current changes and can be of interest for applications where a simplified refrigerator is used such as RSFQ and also voltage standard applications [19]. For example, conventional SIS junctions exhibit an excellently stable temperature range from 0 to nearly 0.6 T c but a very strong Ic-vs-T dependence above.…”

Magnetoresistance and Irreversibility Fields of Bismuth-Based 1G Tape

“…The successful preparation of high-temperature superconductor (HTS) films and tapes has opened new opportunities for large-scale applications including power system components such as electrical motors, generators, power transmission cables, transformers, magnets, and [1][2][3]. Extensive investigations have been focused on optimizing the fabrication and processing techniques of HTS wires and tapes [4] giving the high values of critical current densities and irreversibility fields.…”