Abstract:
We study in this paper, with the context of a tight-binding on-side model, the electronic properties of one-dimensional random lattices with correlated impurities. We show that, when symmetrical impurities are inserted in a host chain of site energy and a constant hopping interaction V, diffusion will occur even when is random. We provide analytic expressions for the transmittance and confirm the theoretical results by a great deal of numerical calculations. When = V, we find that the mean-square displacement (MSD) follows the law m 2 ∝t β with β = 2.0 for = constant and β = 1.0 for = = random, respectively.
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Received 15 January 2001 and Received in final form 30 April 2001
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Huang, X., Peng, R., Qiu, F. et al. Delocalization in disordered chains with random symmetrical impurities. Eur. Phys. J. B 23, 275–281 (2001). https://doi.org/10.1007/s100510170046
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DOI: https://doi.org/10.1007/s100510170046