| 量子尺寸效应与纳米金属小粒子超导电性 |
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| 引用本文： | 卢孟春,程南璞. 量子尺寸效应与纳米金属小粒子超导电性[J]. 四川大学学报(自然科学版), 2004, 41(6): 1207-1211 |
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| 作者姓名： | 卢孟春 程南璞 |
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| 作者单位： | 涪陵师范学院物理系,重庆涪陵,408003;西南师范大学材料科学与工程学院,重庆400715;西南师范大学材料科学与工程学院,重庆,400715 |
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| 基金项目： | 国家自然科学基金(10147207),重庆市科委应用基础项目基金 |
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| 摘 要： | 作者考虑到能级分布和能级关联的影响,采用随机矩阵理论,计算了无外场作用时不同粒径超导金属小粒子的两个重要自旋态(s=0,1／2)超导能隙随温度的变化关系,并在自旋s=0时,验证了实验观察所得的超导增强效应。
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| 关 键 词： | 量子尺寸效应 纳米金属小粒子 超导电性 随机矩阵理论 |
| 文章编号： | 0490-6756(2004)06-1207-05 |
Quantum Size Effect and the Superconductivity in Metallic Nanoparticles |
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| LU Meng-chun. Quantum Size Effect and the Superconductivity in Metallic Nanoparticles[J]. Journal of Sichuan University (Natural Science Edition), 2004, 41(6): 1207-1211 |
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| Authors: | LU Meng-chun |
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| Affiliation: | LU Meng-chun~ |
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| Abstract: | Considering the effects of the level distribution and the level correlation, the authors use the random matrix theory to calculate the relationship between the energy gap and the temperature of metallic nano-particles with different size and two important states (s=0,1/2). The exterior magnetic field is not considered in the calculation. From the calculation, it is found that when s=0, the superconductivevity is enhanced. The enhancement has been observed in the experiment. |
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| Keywords: | quantum size effect metallic nano-particle superconductivity random matrix theory |
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