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Magnetoresistance of a YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> Corbino disk: probing geometrical contributions to the unconventional normal-state magnetoresistance of high-temperature superconductors
- Autor(en)
- W. Göb, W. Lang, R. Sobolewski
- Abstrakt
Complementary measurements of geometrical effects in the normal-state magnetoresistance of YBa/sub 2/Cu/sub 3/O/sub 7/ thin films, patterned into a Corbino disk, a square, and a strip-shaped sample, are reported. We observe a difference between the Corbino and strip-sample magnetoresistances, which arises from bending of the current trajectories in the transverse magnetic field and equals the square of the Hall angle in YBa/sub 2/Cu/sub 3/O/sub 7/. This geometrical magnetoresistance component vanishes when the magnetic field is oriented parallel to the film. The geometrical magnetoresistance has also been found to be significant in square-shaped samples, and thus, has to be considered in magnetoresistance measurements of YBa/sub 2/Cu/sub 3/O/sub 7/ single crystals.
- Organisation(en)
- Elektronische Materialeigenschaften
- Journal
- Physical Review B
- Band
- 57
- Anzahl der Seiten
- 4
- ISSN
- 1098-0121
- DOI
- https://doi.org/10.1103/PhysRevB.57.R8150
- Publikationsdatum
- 1998
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103018 Materialphysik
- Schlagwörter
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/f863c2c8-d04a-43de-9dc2-ec2b8a08cd00