Magnetic field and currents in HTSC films

• Authors: K. Gaikovich , Yu. Nozdrin , A. Zhilin
• Languages of publication: EN

Abstracts

EN

Magnetic field measurements above type-II superconductor films in a remanent magnetization state have been used to determine two dimensional surface current distributions. Using the Biot-Savart law for the surface current density, integral equations (of 2-D convolution type) for two components of current have been obtained. These equations have been solved by employing Tikhonov's method of generalized discrepancy, and the surface current pattern in superconductors as well as the magnetic field distribution on the film surface have been obtained. Current peculiarities related to various kinds of inhomogeneities, specific character of the film form, and a laser pulse effect have been observed. In particular, it was discovered that a laser pulse can signficantly redistribute the film currents without changing the total number of current vortices in the film.

Keywords

EN

high-Tc superconductor films; current distribution; magnetic field; Tikhonov's deconvolution method; laser pulse effect; 74.25.Ha

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2003
• Volume: 1
• Issue: 3
• Pages: 363-392

Dates

published

1 - 9 - 2003

online

1 - 9 - 2003

Contributors

author

K. Gaikovich

• Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhny Novgorod, Russia

author

Yu. Nozdrin

• Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhny Novgorod, Russia

author

A. Zhilin

• Institute for Physics of Microstructures, Russian Academy of Sciences, GSP-105, Nizhny Novgorod, Russia

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Identifiers

DOI

10.2478/BF02475851