| 铜氧化物超导体正常态禁带宽度的计算 |
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| 引用本文： | 陈伟,马如璋.铜氧化物超导体正常态禁带宽度的计算[J].北京科技大学学报,1993,15(3):298-304. |
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| 作者姓名： | 陈伟 马如璋 |
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| 作者单位： | 北京科技大学材料物理系
(陈伟)，北京科技大学材料物理系(马如璋) |
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| 摘 要： |
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| 关 键 词： | 铜氧化物 超导体 正常态 禁带宽度 |
Calculation on the Energy Gap for High- T_c Copper Oxide Superconductors at Normal State |
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| Chen WeiMa Ruzhang.Calculation on the Energy Gap for High- T_c Copper Oxide Superconductors at Normal State[J].Journal of University of Science and Technology Beijing,1993,15(3):298-304. |
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| Authors: | Chen WeiMa Ruzhang |
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| Institution: | Chen WeiMa Ruzhang Department of Materials Physics |
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| Abstract: | A approximate method for energy gap calculation of oxides is introduced in detail, and is applied for the gap culculation of high-Tc copper oxide superconductors at normal state. It is revealed from the result that, most oxide superconductors at nomal state have the gap values within 8.50-8.80eV. In the same system, the variation of Cu-O layer structure results in the increase of Tc upon the decrease of Eg, while in YBa2Cu3Oy, the variation of oxygen content results in the increase of Tc upon the increase of Eg. Further analysis shows, the Egvalues of high- Tc oxides at nomal state have a close relationship with superconductivity, and the average ionization potential is the major factor in determining the Egvalues. |
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| Keywords: | copper oxide superconductors normal state energy gap critical temperature |
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