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| Superconductivity in MgB2 | |
| 引用本文： | DAI Wen,FENG Qingrong,GAO Zhengxiang. Superconductivity in MgB2[J]. 自然科学进展(英文版), 2002, 12(11): 801-807 |
| 作者姓名： | DAI Wen FENG Qingrong GAO Zhengxiang |
| 作者单位： | Cryogenic Laboratory, Chinese Academy of Sciences, Beijing 100080, China,Department of Physics, Peking University, Beijing 100871, China,Department of Physics, Peking University, Beijing 100871, China |
| 基金项目： | Supported by the National Natural Science Foundation of China (Grant No. 19974051) |
| 摘 要： | In January of 2001 the superconductivity of the compound MgB2 with a critical temperature Tc of up to 39 K was discovered. This Tc is the highest in all intermetallic compound and alloy superconductors. MgB2 has a simple structure and its manufacturing capital cost is lower, therefore it could become a practical superconductor in the future. The recent progress is reviewed here which covers the progress in electronic structure, high Tc mechanism, superconducting parameters (Debye temperature, specific heat coefficient of electron, critical fields, coherent length, penetration depth, energy gap, critical current and relaxation rate of flux). Moreover the issue on power transmission is discussed. |
| 关 键 词： | MgB2 superconductivity electronic structure critical parameters electric transmission |
Superconductivity in MgB2 |
|
| DAI Wen,FENG Qingrong,GAO Zhengxiang. Superconductivity in MgB2[J]. Progress in Natural Science, 2002, 12(11): 801-807 | |
| Authors: | DAI Wen FENG Qingrong GAO Zhengxiang |
| Affiliation: | 1. Cryogenic Laboratory, Chinese Academy of Sciences, Beijing 100080, China 2. Department of Physics, Peking University, Beijing 100871, China |
| Abstract: | In January of 2001 the superconductivity of the compound MgB2 with a critical temperature Tc of up to 39 K was discovered. This Tc is the highest in all intermetallic compound and alloy superconductors. MgB2 has a simple structure and its manufacturing capital cost is lower, therefore it could become a practical superconductor in the future. The recent progress is reviewed here which covers the progress in electronic structure, high Tc mechanism, superconducting parameters (Debye temperature, specific heat coefficient of electron, critical fields, coherent length, penetration depth, energy gap, critical current and relaxation rate of flux). Moreover the issue on power transmission is discussed. |
| Keywords: | MgB2 superconductivity electronic structure critical parameters electric transmission |
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