石墨烯中的极化子效应  

Polaron Effect in Monolayer Graphene

作　　者：王子武 WANG Zi-wu(Department of Physics,Tianjin University,Tianjin 300354,China)

机构地区：[1]天津大学物理系,天津300354

出　　处：《内蒙古民族大学学报（自然科学版）》2018年第4期283-291,共9页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：国家自然科学基金项目(11674241)

摘　　要：综合概述了利用线性组合算符结合LLP幺正变换方法系统的研究石墨烯中极化子效应.分别对形变势型声学极化子、表面光学极化子和库仑束缚势型极化子进行研究,重点讨论了强磁场作用下,极化子效应导致的零朗道能级劈裂和石墨烯带隙打开及其相应的调控机制.Polaron states were studied using the combined linear operator and LLP unitary transformations. The polaron states were formed due to the charge carriers coupling with the longitudinal acoustic phonons and surfaceoptical phonons via the deformation potential and Fro？ hlich mechanisms. The polaron effect on the splitting of the zeroth Landau level and in monolayer graphene are mainly discussed under strong magnetic field. The corresponding modulating ways for the splitting amplitude are also presented.

关 键 词：石墨烯 极化子 表面光学声子 

分 类 号：O469[理学—凝聚态物理]