| Original Articles |
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Correlation between Carrier Concentration and Superconductivity in the 123-phase System |
| HE Zhenhui;XIA Jiansheng;WANG Shunxi;CAO Liezhao;CHEN Zuyao;ZHANG Han1;FANG Minghu2;XU Zhu’an2;ZHANG Qirui2 |
| Department of Physics, and Department of Applied Chemistry,
University of Science and Technology of China, Hefei 230026
1Department of Physics, Beijing University, Beijing 100871
2Department of Physics, Zhejiang University, Hangzhou 310027
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| Cite this article: |
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HE Zhenhui, XIA Jiansheng, WANG Shunxi et al 1991 Chin. Phys. Lett. 8 259-262 |
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Abstract Besides the structure and oxygen content, the resistance-temperature relationship, Hall carrier concentration (nH) and midpoint temperature of superconducting transition (Tc) were measured for more than six 123-phase systems with elemental substitution. No correlation is found between the oxygen content and Tc, nor is between the orthorhombic structure and Tc. Instead, an unmonotonic relationship is jound between nH and Tc. The optimum nH for the highest Tc is about 3.8 x1021cm-3. All this draws a conclusion that nH is a parameter to describe the high Tc superconductivity.
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| Keywords:
74.65.+n
72.20.Jv
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Published: 01 May 1991
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| PACS: |
74.65.+n
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72.20.Jv
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(Charge carriers: generation, recombination, lifetime, and trapping)
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