Electronic states and transport properties in the Kronig-Penney model with correlated compositional and structural disorder

Details Electronic states and transport properties in the Kronig-Penney model with correlated compositional and structural disorder Electronic states and transport properties in the Kronig-Penney model with correlated compositional and structural disorder

2010-03-18

arxiv.org/abs/1003.3691v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

23 pages, 5 figures

Scientific paper

We study the structure of the electronic states and the transport properties of a Kronig-Penney model with weak compositional and structural disorder. Using a perturbative approach we obtain an analytical expression for the localisation length which is valid for disorder with arbitrary correlations. We show how to generate disorder with self- and cross-correlations and we analyse both the known delocalisation effects of the long-range self-correlations and new effects produced by cross-correlations. We finally discuss how both kinds of correlations alter the transport properties in Kronig-Penney models of finite size.

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