| Issue |
Europhys. Lett.
Volume 41, Number 4, february II 1998
|
|
|---|---|---|
| Page(s) | 419 - 424 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1998-00167-2 | |
| Published online | 01 December 2003 | |
Turbulent relaxation in the vortex lattice
1
Department of Physics, University of Oslo, Blindern, N-0316
Oslo, Norway
2
Department of Physics, Bar-Ilan University, Ramat Gan 52900, Israel
Received:
16
June
1997
Accepted:
5
January
1998
The time dependence of flux patterns of an untwinned YBa2Cu3O
single crystal
showing the “meandering instability” is observed at 
using
magneto-optical imaging. When applying a reversed external field to a
remanent
state, along the front of penetrating antivortices, flux droplets are
formed which can separate from the flux front and move in a spiral-like
fashion. It is shown that the vortices along the flux front are in fast
motion. These observations are discussed using a newly developed theory.
Furthermore, the flux patterns are analyzed in terms of flux creep.
PACS: 74.60.Ec – Mixed state, critical fields, and surface sheath / 74.60.Ge – Flux pinning, flux creep, and flux-line lattice dynamics / 78.20.Ls – Magnetooptical effects
© EDP Sciences, 1998
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