Numerical computation of the interaction between electromagnetic waves and nonlinear superconducting materials

Author

Caorsi, Salvatore ; Massa, Andrea ; Pastorino, Matteo

Author_Institution

Dept. of Electron., Pavia Univ., Italy

Volume

49

Issue

10

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

1810

Lastpage

1817

Abstract

In this paper, we propose a numerical solution to the computation of the interaction between electromagnetic waves and superconducting materials. A superconductor is identified as a material with a negative dielectric permittivity on the basis of the two-fluid model and an integral-equation formulation is developed. The approach takes into account the nonlinear behavior (i.e., the dependence of the material parameters on the internal magnetic field), experimentally observed in previous studies. An iterative process is then developed for the numerical solution; the process is based on the distorted-wave Born approximation. The mathematical formulation of the approach is described and some numerical results concerning the canonical case of a circular cylinder and the behavior of two superconducting transmission lines are reported

Keywords

Maxwell equations; penetration depth (superconductivity); superconducting microwave devices; superconducting transmission lines; circular cylinder; distorted-wave Born approximation; integral-equation formulation; iterative process; negative dielectric permittivity; nonlinear superconducting materials; superconducting transmission lines; two-fluid model; Approximation methods; Dielectric materials; Electromagnetic scattering; Magnetic materials; Nonlinear distortion; Superconducting materials; Superconducting microwave devices; Superconducting transmission lines; Superconductivity; Surface resistance;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.954788

Filename

954788