石墨烯(graphene)声子结构及热学性质.pdf

文档介绍：摘要石墨烯(graphene)是一种单层碳原子蜂窝结构,、体积微小、量子尺寸效应显著等特性,,具有许多优异而独特的物理、化学和机械性能,在微纳电子器件、光电子器件、,初步研究了石墨烯(graphene),讨论了平面内和垂直于平面晶格振动的色散关系,,计算出了graphene共价键妒杂化轨道波函数的具体表达式,,,我们画出了graphene原胞质心点阵结构图,研究了质心作微振动时的动力学特性,,确立了品格振动采取“格波”形式,,并讨论得到在低温下,Graphene晶体振动比热与绝对温度T。,:石墨烯;晶格动力学;声子结构;振动比热;德拜温度ABSTRACTGraphene(singlelayerofcaLrbonatoms),,withoutstandinganduniquephysical,chemicmandmechanicalproperties,andhasextensiveapplication8inthedesignofdeVice8ofmicr伊nan昏electronic8,,thisthes诘studiedtheformationofcrystalgraphene(monlayerofcarbonatoms)-planeandout-offplanelatticeVibration出dispersio璐ha、,,№functionsofcarbonatoms,chaptertwocalculatestheconcreteexpressionsofs∥llybridizationorbitwavefunction8ofgraphenecovaleⅡtbonds,