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| 二维无序系统的电子性质 | |
| 引用本文： | 陈代森,吴剑强. 二维无序系统的电子性质[J]. 暨南大学学报(自然科学与医学版), 1990, 0(3) |
| 作者姓名： | 陈代森 吴剑强 |
| 作者单位： | 暨南大学物理系，暨南大学物理系 |
| 摘 要： | 用改进了的 Recursion 方法研究二维无序系统的电子性质。计算了二维无序系统的电子态密度、迁移率边界、局域化临界点以及直流电导率。结果表明,与对角无序系统相比,对角及非对角无序系统以及存在次近邻跳跃的系统局域性质均发生变化,非对角无序的影响取决于其大小,而次近邻跳跃的存在总是使电子态趋于延展。 |
| 关 键 词： | 无序系统 非对角无序 Recursion方法 迁移率边界 次近邻跳跃 直流电导率 |
The Electronic Properties of Two-Dimensional Disorder Systems |
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| Chen Daisen Wu Jianqiang. The Electronic Properties of Two-Dimensional Disorder Systems[J]. Journal of Jinan University(Natural Science & Medicine Edition), 1990, 0(3) | |
| Authors: | Chen Daisen Wu Jianqiang |
| Affiliation: | Dept of Physics |
| Abstract: | This paper represeuts the study of two-dimensional disorder systems with the improved recursion method.The local density of states(LDOS),the mobility edge,the localization critical value and the de conductivity for two-dimensional disorder systems are calculated.Our results show that compared with diagonal disorder systems,there are changes at localization properties of diagonal disorder systems with off-diagonal disorder or with next nearest neighour hopping matrixes.The influence of off-diagonal disorder to systems depends on its numerical value.But with next nearest neighbour hopping matrixes, systems trend to be extended. |
| Keywords: | Disorder system Off-diagonal disorder Recursion method Mobility edge Next nearest neighour hopping D C conductivity |
| 本文献已被 CNKI 等数据库收录！ | |