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|Type:||Artigo de periódico|
|Title:||LOCAL PROPERTIES IN THE ELECTRONIC-STRUCTURE OF DISORDERED BINARY-ALLOYS|
|Abstract:||The electronic density of states (DOS) of disordered binary alloys is studied for a tight-binding model Hamiltonian, using a local approach based on a continued-fraction representation for the Green function. In addition to a single-site probability, a short-range-order parameter is introduced to monitor nearest-neighbor correlations. Our method employs a termination that allows for local fluctuations of both species of atoms, according to the configuration produced. The final DOS is obtained as a weighted average over all the local spectra generated in the way described above. We probe our approach in the one-dimensional case, and excellent agreement with Monte Carlo simulations is found.|
|Editor:||American Physical Soc|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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