Why Do Glassy Materials Possess Energy Gaps?

Abstract

We discuss the nature of transparency in glassy matherials. The accepted view provides for energy gaps due to the persistence (into the glassy state) of structure in the electronic spectrum. An alternative mechanism, discussed here, follows from inclusion of a strong electron phonon interaction for localized electronic state. We examine the consequences of varying the strength of the interaction for a simple model, and predict a qualitatively different behavior for strong and weak coupling. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 13, 1979
Accession Number
ADA078668

Entities

People

  • D. C. Licciardello

Organizations

  • Princeton University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Amorphous Materials
  • Couplings
  • Electrical Properties
  • Electronic States
  • Electrons
  • Energy Bands
  • Energy Gaps
  • Excitation
  • Fermi Levels
  • Low Temperature
  • Materials
  • Optical Materials
  • Physics
  • Semiconductors
  • Solid State Physics
  • Valence Bands

Readers

  • Materials Science and Engineering.
  • Molecular Photonics/Laser Physics
  • Theoretical Analysis.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene