Electronic density of states of incommensurate-disordered systems

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Abstract
We have calculated the electronic density of states of one-dimensional incommensurate systems within the tight-binding approximation with first-neighbor interactions for several modulation functions for the self-energies. Among them, zigzag, sawtooth, and solitonlike functions were used. We find that the density of states is strongly dependent on the type of modulation. Two different types of disorder were introduced simulating a melting process, becoming the systems practically indistinguishable from a totally disordered model even when partially disordered.