环境无序对Fibonacci型DNA分子电子结构的影响  

Effects of Environmental Disorder on Electronic Structure of Fibonacci-type DNA Molecule

作　　者：刘小良[1] 梁亮文[1] 徐慧[1] 

机构地区：[1]中南大学物理科学与技术学院,长沙410083

出　　处：《材料导报》2011年第24期119-123,共5页Materials Reports

基　　金：湖南省自然科学基金(08JJ3005);中国博士后科学基金(20080431025);中南大学博士后基金(20071025)

摘　　要：借助紧束缚模型,数值研究了环境无序效应对基于鱼骨模型的合成Fibonacci型DNA分子的电子态密度和输运系数的电子结构的影响。数据表明,随着环境无序度的增大,电子态的分布范围变广,且有向高能区移动的趋势,能带有一定程度的展宽,能带间隙变窄,体现出无序系统的特征。Based on the tight-binding model, influence of the environmental disordered effect on the electronic state density of synthesis of fishbone model Fibonaci type DNA molecular and transport coefficient of electronic structure were researched. Result shows that as the degree of disorder increases, the distribution of electronic states be come wider, and there is a trend moving to the high energy region which can be broa-dened with a certain degree, the band gap becomes narrower, reflecting the disordered systems characteristics.

关 键 词：DNA 环境无序 电子结构 输运性质 

分 类 号：O561.2[理学—原子与分子物理]