Publication
Title
Magnetization of a superconducting film in a perpendicular magnetic field
Author
Abstract
With large thin superconducting films in a perpendicular magnetic field, the usual definition and calculation of the magnetization M via currents or as the difference of two fields fail, since the spatially averaged magnetic field in the film coincides with the uniform applied field and the demagnetization factor is unity. The definition of M as field-derivative of the free energy, however, still works in this limit. We generalize the virial theorem, previously derived for infinite bulk superconductors, to infinitely extended films of arbitrary thickness. An expression for M is obtained that indeed reproduces the M computed from the field derivative of the free energy.
Language
English
Source (journal)
Physical review : B : solid state. - Lancaster, Pa, 1970 - 1978
Publication
Lancaster, Pa : 2008
ISSN
0556-2805
Volume/pages
78:5(2008), p. 0544047,1-054407,7
ISI
000259368200063
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 27.05.2009
Last edited 01.11.2017
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