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Spontaneous vortex creation in superconducting thin films covered by elliptical ferromagnetic dots

Spontaneous vortex creation in superconducting thin films covered by elliptical ferromagnetic dots In this paper an analytical and numerical study of a superconducting thin film with ferromagnetic textures of elliptical geometries in close proximity is presented. The screening currents induced in the superconductor due to the magnetic texture are calculated. Close to the superconducting transition temperature T c the spontaneous creation of superconducting vortices becomes energy favorable depending on the value of the magnetization and the geometrical quantities of the magnetic texture. The creation of vortices by elliptic dots is more energy favorable than those created by circular ones. The superconductor covered by elliptic dots array exhibits anisotropic transport properties. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Spontaneous vortex creation in superconducting thin films covered by elliptical ferromagnetic dots

Physical Review B , Volume 69 (1) – Jan 1, 2004
4 pages

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Publisher
American Physical Society (APS)
Copyright
Copyright © 2004 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.69.012505
Publisher site
See Article on Publisher Site

Abstract

In this paper an analytical and numerical study of a superconducting thin film with ferromagnetic textures of elliptical geometries in close proximity is presented. The screening currents induced in the superconductor due to the magnetic texture are calculated. Close to the superconducting transition temperature T c the spontaneous creation of superconducting vortices becomes energy favorable depending on the value of the magnetization and the geometrical quantities of the magnetic texture. The creation of vortices by elliptic dots is more energy favorable than those created by circular ones. The superconductor covered by elliptic dots array exhibits anisotropic transport properties.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jan 1, 2004

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