淡江大學機構典藏:Item 987654321/73492
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    题名: Electronic properties of one-dimensional systems with long-range correlated binary potentials
    作者: Gong, Long-yan;Tong, Pei-qing;Zhou, Zi-cong
    贡献者: 淡江大學物理學系
    日期: 2011-08
    上传时间: 2011-10-25
    出版者: Institute of Physics Publishing (IOP)
    摘要: We study numerically the electronic properties of one-dimensional systems with long-range correlated binary potentials. The potentials are mapped from binary sequences with a power-law power spectrum over the entire frequency range, which is characterized by correlation exponent β. We find the localization length ξ increases with β. At system sizes N → ∞, there are no extended states. However, there exists a transition at a threshold βc. When β > βc, we obtain ξ > 0. On the other hand, at finite system sizes, ξ ≥ N may happen at certain β, which makes the system "metallic", and the upper-bound system size N*(β) is given.
    關聯: Chinese Physics B 20(8), pp.087102
    DOI: 10.1088/1674-1056/20/8/087102
    显示于类别:[物理學系暨研究所] 期刊論文

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