| 超导石墨烯-正常石墨烯结中的近邻效应 |
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| 引用本文： | 秦志杰,李钊.超导石墨烯-正常石墨烯结中的近邻效应[J].河南科技大学学报(自然科学版),2011,32(4):65-70,111,112. |
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| 作者姓名： | 秦志杰 李钊 |
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| 作者单位： | 郑州大学物理工程学院,河南郑州,450001 |
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| 基金项目： | 国家自然科学基金项目(10874154); 国家人力资源和社会保障部留学回国人员科技活动择优基金项目 |
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| 摘 要： | 基于Bardeen-Cooper-Schrieffer(BCS)理论,在紧束缚近似下,利用Bogoliubov-de Gennes(BdG)方程,通过自洽计算,研究了具有S波配对的超导石墨烯-石墨烯结中的近邻效应。针对在超导部分和正常导体部分的费米能级匹配和不匹配的两种情况,讨论了化学势对体系的局域态密度,以及配对振幅的影响。
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| 关 键 词： | 石墨烯 超导 S波配对 BCS理论 近邻效应 |
Proximity Effect in a Superconducting Graphene and Graphene Junction |
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| QIN Zhi-Jie,LI Zhao.Proximity Effect in a Superconducting Graphene and Graphene Junction[J].Journal of Henan University of Science & Technology:Natural Science,2011,32(4):65-70,111,112. |
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| Authors: | QIN Zhi-Jie LI Zhao |
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| Institution: | QIN Zhi-Jie,LI Zhao(School of Physics & Engineering,Zhengzhou University,Zhengzhou 450001,China) |
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| Abstract: | On the basis of Bardeen-Cooper-Schrieffer(BCS) theory and self-consistent calculation of the Bogoliubov-de-Gennes equations,this paper investigated proximity effect on a superconducting graphene with s-wave pairing and graphene junction structure.The dependence of the local density of states and pairing amplitude on the chemical potential was calculated for both the Fermi-level match case and Fermi-level mismatch case.The relation between the results and electronic structure was also discussed. |
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| Keywords: | Graphene Superconductivity S-wave pairing BCS theory Proximity effect |
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