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| 有限二维复式晶格电子结构的尺度效应 | |
| 引用本文： | 杨慧,章林溪,童国平,吕岿,杨建荣. 有限二维复式晶格电子结构的尺度效应[J]. 原子与分子物理学报, 2003, 20(1): 45-50 |
| 作者姓名： | 杨慧 章林溪 童国平 吕岿 杨建荣 |
| 作者单位： | 1. 浙江大学物理系,杭州,310027;贵州毕节师专物理系,毕节,551700 2. 浙江大学物理系,杭州,310027 3. 浙江师范大学物理系,金华,321004 |
| 摘 要： | 以二维复式晶格作为有限系统的集团模型,利用紧束缚近似,在考虑链间耦合及链端效应的情况下,计算了格点数分别为16、32、64、128时π电子在最近邻及次近邻跳跃集团的能谱和态密度.讨论了不同格点数和结构参数对态密度及带宽的影响. |
| 关 键 词： | 复式晶格 集团 态密度 尺度效应 |
| 文章编号： | 1000-0364(2003)01-0045-06 |
| 收稿时间： | 2002-07-15 |
| 修稿时间： | 2002-07-15 |
Size effect of the electron structure of the two-dimensional finite compound lattice |
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| Abstract: | In the paper, the two-dimensional finite compound lattice are taken as the model of clusters. Under conditions of taking interchain coupling and chain terminal effect into account, the tight-binding approximation is used to calculate the energy spectra and the densities of states for the nearest neighbor and the second-neighbor hopping of π electron when the number of site atoms is 16,32,64 and 128, respectively. The different site atom number and the different structural parameters effect on the density of states and the bandwidth are discussed. |
| Keywords: | Compound lattice Cluster Density of states Size effect |
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