Magnetic field computation in superconducting thin film structures by a volume integral equation method

Author

Hildebrandt, G. ; Uhlmann, F.H.

Author_Institution

Theor. Basics of Electr. Eng., Tech. Univ. of Ilmenau, Germany

Volume

32

Issue

3

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

690

Lastpage

693

Abstract

We present a method to calculate the current density distribution, the magnetic field distribution and the inductance matrix of three dimensional superconducting structures by minimizing the free energy. In the case of high-T_c superconductors, the kinetic inductance becomes substantial and an accurate calculation of inductances is required. The London penetration depth λ and the kinetic inductance are included. The results of a program which realizes this method agree well with measurements of high-T_c dc-SQUIDs (superconducting quantum interference devices)

Keywords

SQUIDs; free energy; high-temperature superconductors; inductance; integral equations; magnetic fields; penetration depth (superconductivity); superconducting thin films; DC-SQUIDs; London penetration depth; current density; free energy minimization; high-T_c superconductors; inductance matrix; kinetic inductance; magnetic field; superconducting thin films; three dimensional structures; volume integral equation; Current density; High temperature superconductors; Inductance; Integral equations; Interference; Kinetic energy; Kinetic theory; Magnetic fields; SQUIDs; Superconducting devices; Superconducting thin films; Superconductivity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.497332

Filename

497332