The electronic density of states of amorphous covalent semiconductors is investigated using the multiple scattering theory of nonoverlapping muffin‐tin potentials. In the nearest neighbour approximation an expression is derived for the density of states which relates it to the density of states of a simple tight‐binding Hamiltonian. Numerical calculations for amorphous sps‐bonded C and amorphous Si show the existence of a pseudogap which is determinated by short‐range order.
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W. John (1973) studied this question.
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