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第一性原理计算锐钛矿(101)面的电子结构
引用本文:陈书鸿,潘杰,付川,李廷真.第一性原理计算锐钛矿(101)面的电子结构[J].重庆三峡学院学报,2009,25(3):60-63.
作者姓名:陈书鸿  潘杰  付川  李廷真
作者单位:重庆三峡学院化学与环境工程学院,重庆万州,404000
基金项目:重庆市教委基金,重庆三峡学院青年资助项目 
摘    要:采用基于密度泛函理论的平面波赝势方法计算了锐钛矿(101)表面的电子结构.首先对锐钛矿完整(101)表面模型进行结构优化,在此基础上计算了电子结构,得到了能带结构和态密度等数据.结果分析表明表面的电子结构与体相基本相同,在完整表面上没有出现表面态,驰豫后完整的锐钛矿(101)表面是稳定的,表面价带主要由O2p组成,导带主要由Ti3d组成,表面导带态密度变窄导致表面能隙比体相能隙略增大.通过表面原子局域态密度和Mulliken净电荷的分析,推测O2c、O3c、Ti5c可能是活性位置.

关 键 词:密度泛函理论  二氧化钛  (101)表面  电子结构

First-principles calculation on the electronic structure of cleaning anatase (101) surface
CHEN Shu-Hong,PAN Jie,FU Chuan,LI Ting-Zhen.First-principles calculation on the electronic structure of cleaning anatase (101) surface[J].JOurnal of Chongqing Three Gorges University,2009,25(3):60-63.
Authors:CHEN Shu-Hong  PAN Jie  FU Chuan  LI Ting-Zhen
Institution:School of Chem.and Environment Engineering;Chongqing Three Gorges University;Wanzhou in Chongqing;404000
Abstract:The electronic structures(band structure and density of states) of TiO2 anatase(101) surface optimized with geometry have been studied using the plane-wave pseudopotential method based on density-functional theory.The calculation results indicate that the relaxed anatase(101) surface is stable,and no surface state is observed on the surface;at the same time,the electronic structure of the surface is similar to that of the bulk.The valence band of the anatase(101) face is dominated by O 2p states,while the c...
Keywords:density functional theory  titanic oxide  (101)surface  electronic structure
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