Topological and topological-electronic correlations in amorphous silicon

Details Topological and topological-electronic correlations in amorphous silicon Topological and topological-electronic correlations in amorphous silicon

2007-09-30

arxiv.org/abs/0710.0175v1

Physics

Condensed Matter

Materials Science

7 pages, 11 figures, submitted to Journal of Crystalline Solids

Scientific paper

10.1016/j.jnoncrysol.2008.02.021

In this paper, we study several structural models of amorphous silicon, and discuss structural and electronic features common to all. We note spatial correlations between short bonds, and similar correlations between long bonds. Such effects persist under a first principles relaxation of the system and at finite temperature. Next we explore the nature of the band tail states and find the states to possess a filamentary structure. We detail correlations between local geometry and the band tails.

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