Macromolecular disorder and electron localization: A numerical study with application to Se
- 1 May 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 49 (17) , 11704-11708
- https://doi.org/10.1103/physrevb.49.11704
Abstract
We present a numerical study of a simple model to describe the electronic structure of polymer fluids such as liquid Se. Using a simplified geometry and a one-electron tight-binding Hamiltonian, we investigate the density of states and the localized or extended nature of eigenstates. The metallic or nonmetallic character of the system is analyzed utilizing a scaling procedure. With increasing chain length, a transition from metallic to nonmetallic behavior can be observed, indicated by the presence of localized states in a pseudogap.Keywords
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