Abstract
AbstractFor a generalized tight binding model of amorphous one‐component systems, where the energy levels and the surrounding overlap and hopping integrals are linearly coupled, the localization theory of Economou and Cohen is applied. In terms of several approximations the localization function L(E) is discussed. Thereby it is confirmed that the off‐diagonal randomness has a delocalization effect. An Anderson transition can only take place if diagonal disorder is strong enough. As an example, the influence of diagonal spin disorder due to electron correlation, treated in the alloy analogy for the Hubbard model, is studied.
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