Progress in Superconductivity
- Volume 2 Issue 1
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- Pages.39-42
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- 2000
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- 1229-4764(pISSN)
Mixed-state Hall Angle in Hg-based Superconducting Thin Films
- Kang, Won-Nam (National Creative Research Initiative Center for Superconductivity, Department of Physics, POSTECH) ;
- Kim, Wan-Seon (National Creative Research Initiative Center for Superconductivity, Department of Physics, POSTECH) ;
- Lee, Sung-Ik (National Creative Research Initiative Center for Superconductivity, Department of Physics, POSTECH)
- Published : 2000.10.01
Abstract
The mixed-state Hall angle has been measured in Hg-based superconducting thin films as functions of magnetic fields (H) up to 18 T. The temperature dependence of the Hall angle shows a peak (T*) at low temperature, which is consistent with a crossover point from the thermally activated flux flow (TAFF) to a critical region (CR). At low fields below 10 T, T* shifts to low temperature with increasing fields. Interestingly, however, we found that T* is independent of fields above 10 T, suggesting unusual vortex state. A physical implication of H-T* line will be discussed.