| 一维无公度体系的电子谱和迁移率边 |
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| 引用本文： | 郑兆勃,朱凯.一维无公度体系的电子谱和迁移率边[J].物理学报,1987,36(5):623-629. |
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| 作者姓名： | 郑兆勃 朱凯 |
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| 作者单位： | 中国科学技术大学物理系 |
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| 摘 要： | 本文详细地计算了对角元为1.9cos(0.7n)+1/3cos(1.4n)]、非对角Hn,n+1=Hn,n-1=1的一维无公度模型的电子态密度,用自能收敛性判据确定出迁移率边的精确位置,讨论了电子谱与迁移率边的自相似性。
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| 收稿时间： | 1986-06-18 |
ELECTRONIC SPECTRA AND MOBILITY EDGES IN ONE-DIMENSIONAL INCOMMENSURATE SYSTEM |
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| ZHENG ZHAO-BO and ZHU KAI.ELECTRONIC SPECTRA AND MOBILITY EDGES IN ONE-DIMENSIONAL INCOMMENSURATE SYSTEM[J].Acta Physica Sinica,1987,36(5):623-629. |
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| Authors: | ZHENG ZHAO-BO and ZHU KAI |
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| Abstract: | Fine structures of electronic spectra of one-dimensional lattice with incommensurate potential Hn,n= 1.9*(cos(0.7n) + l/3*cos(1.4n))Hn,n-1=Hn,n+1= 1 are obtained. The precise positions of mobility edges are found by means of self-energy convergence criterion. Self-similarity in spectra and mobility edges are discussed. |
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