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

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

1165

Lastpage

1167

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233346

Filename

233346