Die u:cris Detailansicht:
Mixed-state Hall effect of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> thin films at high current densities
- Autor(en)
- W. Liebich, P. Gehringer, W. Göb, W. Lang, K. Bierleutgeb, D. Bäuerle
- Abstrakt
Measurements of the mixed-state Hall effect in YBa/sub 2/Cu/sub 3/O/sub 7/ thin film microbridges in high current densities up to 2.7 MA/cm/sup 2/ are reported. Sample heating was greatly reduced by applying a pulsed-current measurement method. We found that the vortex pinning is significantly suppressed in high current densities resulting in an enhancement of the anomalous negative peak of the mixed-state Hall effect. The Hall conductivity, however, increases monotonically below T/sub c/. The results suggest that the sign change of the Hall effect is not related to pinning and that the sharp negative peak results from a competition between the rapidly increasing negative Hall conductivity and the vortex pinning.
- Organisation(en)
- Elektronische Materialeigenschaften
- Journal
- Physica C: Superconductivity and its Applications
- Band
- 282-287
- Seiten
- 2321-2322
- Anzahl der Seiten
- 2
- ISSN
- 0921-4534
- DOI
- https://doi.org/10.1016/S0921-4534(97)01267-7
- Publikationsdatum
- 1997
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103018 Materialphysik
- Schlagwörter
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/325a46d9-c669-4033-9cb6-c4a555281835