点杂质和Anderson无序对于具有S波配对势的石墨烯性质的影响  

Effect of Point Impurity and Anderson Disorder on the Properties of a Superconducting Graphene with S-wave Pairing Potential

作　　者：秦志杰[1] 李钊[1] 万晓培 董鹏娜[2] 

机构地区：[1]郑州大学物理工程学院,郑州450001 [2]郑州职业技术学院,郑州450001

出　　处：《河南师范大学学报（自然科学版）》2011年第2期30-34,共5页Journal of Henan Normal University(Natural Science Edition)

基　　金：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资助项目

摘　　要：基于BCS理论,在紧束缚近似下,通过求解Bogoliubov-de Gennes(BdG)方程,自洽地计算了石墨烯晶格中S波超导配对势对化学势的依赖关系.并分别讨论了点杂质和Anderson无序对体系S波超导配对势的影响.On the basis of self-consistent calculation of the Bogoliubov-de-Gennes equations on a finite honeycomb lattice with s-wave pairing,the research vestigates effects of chemical potential and different type of disorder on the system.The dependence of pairing potential on the chemical potential and disorder are calculated.The relation between the results and electronic structure is also discussed.

关 键 词：石墨烯 超导 无序 

分 类 号：N55[自然科学总论] G658.3[文化科学—教育学]