Sign change of the flux-flow Hall resistance in high-superconductors
- 1 November 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 44 (18), 10396-10399
- https://doi.org/10.1103/physrevb.44.10396
Abstract
We consider a contributon to the flux-flow Hall effect that arises from the existence of large thermomagnetic effects in the mixed state of the high- superconductors. From the measured values of the Seebeck and Nernst-Ettingshausen effects we find that this contribution is as large as the direct flux-flow contribution to the Hall effect, but has the opposite sign for a positive Seebeck coefficient. Therefore it leads to a sign change of the Hall resistance. A calculation of the temperature and field dependence of the Hall resistivity yields good agreement with the data.
Keywords
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