Current and temperature controlled variable inductance in superconducting microstrip lines

Author

Cho, Shinho ; Park, Jung-Chul ; Lee, Cheon

Author_Institution

Dept. of Photonic, Silla Univ., Pusan, South Korea

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

3090

Lastpage

3093

Abstract

The inductance of superconducting microstrip lines is measured both as a function of current and temperature. The measurements are performed at 10 MHz for both meander and straight lines by using a multi-frequency LCR meter. The normal state resistance is observed to follow a linear temperature dependence with a slope of 3.59×10^-3/K for the straight line and with a slope of 2.96×10^-3/K for the meander line. The change in inductance is well described by a quadratic dependence on temperature. This result is consistent with an unconventional pairing state. As for the dependence on the bias current, the inductance shows a squared dependence on the bias current. The results for the current- and temperature-controlled inductance are in good agreement with an equation derived using the Ginzburg-Landau theory for the case of thin films

Keywords

inductance; microstrip lines; superconducting microwave devices; superconducting thin films; 10 MHz; Ginzburg-Landau theory; I,T-controlled inductance; bias current dependence; meander lines; multi-frequency LCR meter; normal state resistance; straight lines; superconducting microstrip lines; temperature dependence; thin films; unconventional pairing state; variable inductance; Current measurement; Electrical resistance measurement; Equations; Inductance measurement; Microstrip; Performance evaluation; Temperature control; Temperature dependence; Temperature measurement; Transistors;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919716

Filename

919716