A variational treatment of electron states in lattices with diagonal disorder
- 20 November 1981
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 14 (32) , L985-L990
- https://doi.org/10.1088/0022-3719/14/32/005
Abstract
A variational method is applied to the partition function of an electron in a lattice with diagonal disorder. Apart from yielding band-tail densities of states the method yields semi-quantitative information on localisation. It is also suggested that critical temperatures will arise separating localised and delocalised regimes; this is a feature shared with attempts to relate the localisation problem with solutions of Ginzburg-Landau mean field theories.Keywords
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