Abstract
The motion of the flux front in YBa2Cu3O7-δ with the field applied parallel to the layers is studied using a scanning Hall probe. By tracking the peak positions versus field in the remanence, we determine directly the critical current density perpendicular to the layers (Jc=8.3×104 A/cm2 at 4.2 K). The observed critical-current anisotropy (∼500) is much larger than indicated by high-temperature measurements. By scanning the flux profiles in the direction perpendicular to the layers, we find direct evidence that flux motion occurs parallel to the layers. A model that accounts for the observed mountain-pass topography in the remanence is presented.
Original language | English (US) |
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Pages (from-to) | 13188-13191 |
Number of pages | 4 |
Journal | Physical Review B |
Volume | 48 |
Issue number | 17 |
DOIs | |
State | Published - 1993 |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics