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02 November 2024
 
  » arxiv » cond-mat/9312011

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Extended electronic states in disordered 1-d lattices: an example
S. Sil ; S. N. Karmakar ; R. K. Moitra ;
Date 2 Dec 1993
Subject cond-mat
AbstractWe discuss a very simple model of a 1-d disordered lattice, in which {em all} the electronic eigenstates are extended. The nature of these states is examined from several viewpoints, and it is found that the eigenfunctions are not Bloch functions although they extend throughout the chain. Some typical wavefunctions are plotted. This problem originated in our earlier study of extended states in the quasiperiodic copper-mean lattice [ Sil, Karmakar, Moitra and Chakrabarti, Phys. Rev. B (1993) ]. In the present investigation extended states are found to arise from a different kind of correlation than that of the well-known dimer-type.
Source arXiv, cond-mat/9312011
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