Microwave induced steps in RF-field-driven DC SQUID and its potential applications

Author

Kondo, T. ; Mizugaki, Y. ; Chen, J. ; Nakajima, K. ; Yamashita, T.

Author_Institution

Sendai Nat. Coll. of Technol., Japan

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

900

Lastpage

903

Abstract

We have been studying an RF-Field-driven DC SQUID (RFDS) that exhibits RF-induced-current-steps larger than those of single junctions at lower normalized frequency and a strong selection rule for the step orders which depends on the external DC magnetic field. In RFDS, even order steps are dominant in the absence of DC magnetic field. Contrarily, a DC magnetic field of a half flux quantum dominantly enhances odd order steps. Therefore the output of an RFDS can be switched between two voltage levels corresponding to the RF-induced-step by an external DC field input for a certain bias condition. We carried out numerical simulations to characterize the switching properties of the RFDS for various bias conditions, including RF circulating currents and DC bias current

Keywords

SQUIDs; superconducting microwave devices; DC magnetic field; RF field driven DC SQUID; microwave induced step; numerical simulation; voltage switching; High temperature superconductors; Josephson junctions; Magnetic fields; Niobium; Numerical simulation; Radio frequency; SQUIDs; Superconducting logic circuits; Telephony; Voltage;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919490

Filename

919490