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Hall Effect of an Oriented Superconducting YBa2Cu3Oy Film |
| HE Zhenhui4;SHA Jian1;WANG Shunxi1;CHENG xiangai1,
ZHOU Guien2;ZHANG Qirui1,3;SHI Wangzhou5;YAO Weiguo5;QI Zhenzhong5
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| 1Department of Physics, and 2Structure Research Laboratory, University of Science and Technology of China, Hefei 230026
3Department of Physics, Zhejiang University, Hangzhou 310027
4Department of Physics, Zhongshan University, Guangshou 510275
5Institute of Solid State Physics, Academia Sinica, Hefei 230031
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| Cite this article: |
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HE Zhenhui, SHA Jian, WANG Shunxi et al 1991 Chin. Phys. Lett. 8 541-543 |
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Abstract A superconducting YBa2Cu3Oy thin film, which is well oriented at (001) direction and in which no grain boundary is observed in the resolution limit of scanning electron microscope micrograph, is selected for the Hall effect measurement from 80 to 220K under a magnetic field of 3T. A very narrow and negative peak of the Hall voltage (VH) is found in the superconducting transition region. A linear dependence of the carrier concentration (nH) on temperature is found in the normal state. The appearance of such a negative peak is attributed to the intrinsic anisotropy of the Hall coefficient (RH) related to the direction of the applied field and current.
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| Keywords:
72.15.Gd
74.70.Vy
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Published: 01 October 1991
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