Resistance Anomaly in The Superconducting Fluctuation Region in Bi2Sr2CaCu2O8+x Single Crystals
- Han, Shaowei, Surveying & Spatial Information Systems, Faculty of Engineering, UNSW
- Zhao, Yong, Materials Science & Engineering, Faculty of Science, UNSW
- Zhang, Hua, Chemistry, Faculty of Science, UNSW
- Gu, Genda, Physics, Faculty of Science, UNSW
- Russell, Graeme, Physics, Faculty of Science, UNSW
- Koshizuka, N
DOIAbstract
A resistivity anomaly near the superconducting transition temperature is observed in the ab-plane of as-grown Bi2Sr2CaCu2O8 (Bi-2 2 1 2) single crystals. The resistivity at the peak is much larger than the normal state resistivity around 100 K. The peak vanished gradually with increasing the applied magnetic field. I---V curves of the Bi-2 2 1 2 samples also exhibit a peak close to the transition steps, vanishing gradually with increasing intrinsic granularity of high-Tc superconductors
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