Volume 48, Number 3, November I 1999
|Page(s)||313 - 319|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Modulation instability of the order parameter in thin-film superconductors with edge barrier
Nizhny Novgorod University - 603600 Nizhny Novgorod, Russia
2 Max-Planck-Institut für Metallforschung - D-70569 Stuttgart, Germany
Accepted: 8 September 1999
The influence of the ideal edge barrier on the entry of vortices and on the magnetization curve of a thin superconducting film is studied within Ginzburg-Landau theory. A modulation instability of the superconducting order parameter is predicted to occur at the film edges when the longitudinal component of the kinematic momentum reaches a critical value at the edges. Successive instabilities lead to a sequence of vortex-chain entry fields and to a serrated structure in the magnetization curve.
PACS: 74.60.Ec – Mixed state, critical fields, and surface sheath
© EDP Sciences, 1999
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