| 摘要 |
PURPOSE:To provide an easily usable superconductive element having small size in entirety by enabling control of conductive state between a source electrode and a drain electrode in response to the gate voltage thereof. CONSTITUTION:A superconductor 2 is formed in laminar state on an insulating substrate 1, and a source electrode 4 and a drain electrode 5 are formed on the surface of the superconductor 2. Further, a gate electrode 7 is formed through a dielectric 6 on the region between the electrodes 4 and 5. A power supply 9 is connected through a load 8 between the electrodes 4 and 5, and a voltage source 10 is connected with the electrode 7 as positive between the electrodes 4 and 7. In this configuration when the voltage of the electrode 7 is less than threshold voltage, the voltage vs. current characteristics between the electrodes 4 and 5 exhibit high resistive characteristic. On the other hand, when the voltage of the electrode 7 is set higher than the threshold voltage, the voltage vs. current characteristics between the electrodes 4 and 5 exhibit low resistive characteristic. In this configuration the superconductive element can be easily usable and has small size in entirety. |
