| 金属小粒子超导电性的增强与减弱效应 |
| |
| 引用本文： | 陈志谦,程南璞,姚纯青. 金属小粒子超导电性的增强与减弱效应[J]. 西南师范大学学报(自然科学版), 2001, 26(3): 275-279 |
| |
| 作者姓名： | 陈志谦 程南璞 姚纯青 |
| |
| 作者单位： | 1. 西南师范大学物理系,
2. 西南师范大学数学系, |
| |
| 基金项目： | 重庆市科委应用基础项目资助. |
| |
| 摘 要： | 用无规矩阵理论对BCS理论进行修正，得到一种处理金属小粒子超导电性的新方法，用这种方法我们发现：对于自旋s=1/2的金属小粒子，仅具有超导减弱效应；而处于s=0态的金属小粒子，同时具有超导增强和超导减弱效应，并且，金属小粒子超导电性能隙与转变的 关系与宏观金属中的非常类似。
|
| 关 键 词： | 金属小粒子 超导电性 无规矩阵理论 增强效应 减弱效应 |
| 文章编号： | 1000-5471(2001)03-0275-05 |
| 修稿时间： | 2000-12-29 |
Enhancement and Attenuation of Superconductivity in Small Metallic Grains |
| |
| Chen Zhi-Qian,CHENG Nan-Pu,YAO Chun-qing. Enhancement and Attenuation of Superconductivity in Small Metallic Grains[J]. Journal of southwest china normal university(natural science edition), 2001, 26(3): 275-279 |
| |
| Authors: | Chen Zhi-Qian CHENG Nan-Pu YAO Chun-qing |
| |
| Affiliation: | CHEN Zhi qian 1, CHENG Nan pu 1, YAO Chun qing 2 1 Dept.of Physics,Southwest china Normal University,Chongqing 400715,China, 2 Dept.of Mathematics,Southwest China Normal University,Chongqing 400715,China |
| |
| Abstract: | BCS theory is modified by random matrices theory, and a new approach is obtained to treat superconductivity in small metallic grains. With the new approach, one can only destruction of superconductivity in s =1/2 small metallic grains, but both enhancement and destruction in superconductivity of s =0 metallic grains. And the relationship between the gap and the transition temperature in grains is very similar to that in bulk. |
| |
| Keywords: | small metallic grains superconductivity random matrices theory |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《西南师范大学学报(自然科学版)》浏览原始摘要信息 |
|
点击此处可从《西南师范大学学报(自然科学版)》下载全文 |
