LOCALIZATION VERSUS BAND CROSSING TRANSITIONS IN A MULTIBAND MODEL OF SPATIALLY DISORDERED MATERIALS

A theory is developed to describe the electronic densities of states and localization characteristics of a multiband tight-binding model for a system characterized by quenched liquid-like disorder. For the case of an sp 3 system, and with parameters appropriate to fluid mercury at an independent ele...

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Bibliographic Details
Main Authors: Winn, M, Logan, D
Format: Journal article
Language:English
Published: 1990
Description
Summary:A theory is developed to describe the electronic densities of states and localization characteristics of a multiband tight-binding model for a system characterized by quenched liquid-like disorder. For the case of an sp 3 system, and with parameters appropriate to fluid mercury at an independent electron level of description, the role of localization is found to be important: localized Fermi-level states persist up to densities considerably higher than that at which the s-p band gap closes. © 1990 American Institute of Physics.