Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2006-02-13
"Parallel Algorithms and Cluster Computing", Lecture Notes in Computational Science and Engineerings (K. Hoffman, A. Meyer, ed
Physics
Condensed Matter
Disordered Systems and Neural Networks
24 LaTeX pages in Springer Lecture Notes format (sv* files enclosed), 13 figures, paper will appear as a chapter in "Lecture N
Scientific paper
In this paper we will investigate whether the scaling assumptions made in previous studies for the transition at energies outside the band centre can be reconfirmed in numerical calculations, and in particular whether the conductivity sigma follows a power law close to the critical energy E_c. For this purpose we will use the recursive Green's function method to calculate the four-terminal conductance of a disordered system for fixed disorder strength at temperature T=0. Applying the finite-size scaling analysis we will compute the critical exponent and determine the mobility edge, i.e. the MIT outside the band centre.
Croy Alexander
Roemer Rudolf A.
Schreiber Michael
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