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Electronic states in topologically disordered systems

Grimm, Uwe; Römer, Rudolf A. and Schliecker, Gudrun (1998). Electronic states in topologically disordered systems. Annalen der Physik, 7(5-6) pp. 389–393.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1002/(SICI)1521-3889(199811)7:5/6%3C389::AID-ANDP389%3E3.0.CO;2-A
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Abstract

Networks generated from Voronoi tessellations of space are prototypes for topologically disordered systems. In order to assess the effects of random coordination on the statistical properties of energy spectra, we analyze tight-binding models for planar topologically disordered systems. To this end, the networks are generated by a simple topological model covering a wide range of naturally observed random structures. We find that the energy-level-spacing distributions exhibit level repulsion, similar to the spacings in the energetically disordered Anderson model of localization in the metallic regime.

Item Type: Journal Article
ISSN: 1521-3889
Academic Unit/Department: Mathematics, Computing and Technology > Mathematics and Statistics
Item ID: 12459
Depositing User: Uwe Grimm
Date Deposited: 26 Nov 2008 08:50
Last Modified: 28 Jan 2014 09:59
URI: http://oro.open.ac.uk/id/eprint/12459
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