Title :
The possibility of critical current enhancement at far-infrared-irradiated high-T/sub c/ superconducting weak links
Author :
Takeya, J. ; Akita, S. ; Ishikawa, R. ; Uyeda, K.
Author_Institution :
Central Res. Inst. of Electr. Power Ind., Tokyo, Japan
fDate :
3/1/1993 12:00:00 AM
Abstract :
The possibility of enhancing critical current in a grain boundary superconducting weak link by irradiating with far-infrared light is investigated theoretically. This method is based on the effect that the critical current in a Josephson junction can be enlarged when irradiated by electromagnetic waves having frequency corresponding to the energy gap of electrode superconductors and power in a certain range. In a high critical temperature, T/sub c/, case, critical current is enhanced severalfold. A high-T/sub c/ superconducting switching device whose ON and OFF states are switched by the electromagnetic wave irradiation is proposed.<>
Keywords :
critical current density (superconductivity); electromagnetic waves; high-temperature superconductors; superconducting junction devices; superconducting transition temperature; HTSC; Josephson junction; critical current enhancement; electromagnetic waves; far-infrared-irradiated high-T/sub c/ superconducting weak links; high-T/sub c/ superconducting switching device; Critical current; Electrodes; Electromagnetic scattering; High temperature superconductors; Josephson junctions; Power industry; Superconducting devices; Superconducting materials; Superconducting microwave devices; Temperature dependence;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
