二维六角角晶体材料中的Dirac电子  

Dirac Electrons in Two-Dimensional Hexagonal Crystalline Materials

作　　者：翟学超 戚凤华 许亚芳 周兴飞 金国钧[1] 

机构地区：[1]南京大学物理学院固体微结构国家重点实验室 人工微结构与量子调控协同创新中心,南京210093

出　　处：《物理学进展》2015年第1期1-49,共49页Progress In Physics

基　　金：国家重大基础研究计划(批准号:2009CB929504,2011CB922102,2015CB921202);国家自然科学基金(批准号:10674058,60876065,11074108);江苏省优势学科发展工程(PAPD)的资助

摘　　要：本文综述由碳、硅、硼氮和二硫化钼等单元素或双元素构成的二维六角晶体材料中Dirac电子的研究成果与最新进展。文章从引言开始,接着介绍这些二维六角晶体材料的空间结构和基本电子性质;然后探讨外场调控下这些材料在能谱和光吸收、量子输运、激子凝聚和热Josephson效应,以及拓扑量子相变等方面所表现出来的新奇的物理现象、简要的理论处理和可能的应用前景;最后给出二维六角晶体材料相关研究的总结和展望。谨以本文献给南京大学建立物理学科100周年。We review here the research results and latest progress in studying Dirac electrons in two- dimensional hexagonal crystalline materials composed of single element or double elements like carbon, silicon, boron nitride and molybdenum disulfide. Following a short introduction, the paper discusses the spatial structures and elementary electronic properties of the two-dimensional hexagonal crystalline materials, and analyzes the novel physical phenomena, provides simple theoretical treatments and shows possible applications in near future, involved in the energy spectra and optical absorption, quantum transport, exciton condensation and thermal Josephson effect, as well as topological quantum phase transitions under external fields; finally it gives a summary and perspective for the field. We would like to present this paper to the 100 anniversary of physical discipline in Nanjing University.

关 键 词：二维六角晶体 Dirac电子 外场调控 光吸收 量子输运 激子凝聚 JOSEPHSON效应 拓扑量子相变 BERRY相位 

分 类 号：O73[理学—晶体学]