A review of superconducting three-terminal devices

Superconducting three-terminal devices have been extensively given attention as one of future digital devices since Bcdnorz and Mueller discovered high-critical-temperature superconductivity in the La-Ba-Cu-0 system. The use of zero-resistance superconductivity and low noise cryogenics is expectcd for a limiting field of silicone semiconductor devices. In this paper, it is worthwhile to review some superconducting threeterminal devices expected for fulure devices though almost the materials used are low-temperature superconductors. The feature of various devices hitheno reported is discussed. The possibility and problem of high-temperature superconducting devices are also discussed.