扭曲双层石墨烯的能带结构及超导态形成的理论机制  

Theoretical Mechanism of Formation of the Band Structure and Superconducting State of Twisted Bilayer Graphene

作　　者：吴浩宇 WU Haoyu(School of Science,Zhejiang University of Technology,Hangzhou 310023,Zhejiang)

机构地区：[1]浙江工业大学理学院,浙江杭州310023

出　　处：《丽水学院学报》2023年第5期12-22,共11页Journal of Lishui University

摘　　要：通过建立模型,编程计算扭曲双层石墨烯的能带结构,发现在“魔角”θ=1.05°附近出现了平带结构,这将引起强关联效应,从而产生超导性。同时,分析扭曲石墨烯的电子特性、超导态的磁场效应及石墨烯超导配对对称性,研究结果对进一步实验研究石墨烯的超导性具有一定的借鉴价值。By establishing a model and programming to calculate the band structure of twisted bilayer graphene,we discovered that a flat band structure appeared near the“magic angle”of θ=1.05°,which would lead to strong correlation effects and result in superconductivity.Simultaneously,analyzing the electronic characteristics of twisted graphene,the magnetic field effect of the superconducting state,and the superconducting pairing symmetry of graphene have certain reference value for further experimental research on the superconductivity of graphene.

关 键 词：扭曲石墨烯 魔角 平带结构 超导 

分 类 号：TS207.3[轻工技术与工程—食品科学]