| Original Articles |
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Hall Coefficient of High-Tc Superconductors in a
Modified Bipolaron Model |
| ZHANG Shuang;ZHANG Li-Yuan |
| Department of Physics, Peking University, Beijing 100871
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| Cite this article: |
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ZHANG Shuang, ZHANG Li-Yuan 2001 Chin. Phys. Lett. 18 429-431 |
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Abstract Using non-rigid bipolaron model modified with the correction of pseudogap effect, we have studied the temperature (T) dependence of the Hall coefficient (RH) in the normal state of several typical high-Tc superconductors (e.g. YBa2Cu3O7-δ). The results are in agreement with experiments. It is suggested that the positive maximum in the RH-T diagram corresponds to a point near the bottom of the pseudogap. We have also found that for these high-Tc superconductors, W-T can be scaled into a single universal function form, where W is the bandwidth of the non-rigid bipolaron system.
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| Keywords:
74.25.Fy
74.20.Mn
74.72.-h
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Published: 01 March 2001
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