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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 24 — Nov. 26, 2007
  • pp: 16230–16244

Models of dielectric response in disordered solids

Daniel Franta, David Nečas, and Lenka Zajíčková  »View Author Affiliations


Optics Express, Vol. 15, Issue 24, pp. 16230-16244 (2007)
http://dx.doi.org/10.1364/OE.15.016230


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Abstract

Two dispersion models of disordered solids, one parameterizing density of states (PDOS) and the other parameterizing joint density of states (PJDOS), are presented. Using these models, not only the complex dielectric function of the materials, but also some information about their electronic structure can be obtained. The numerical integration is necessary in the PDOS model. If analytical expressions are required the presented PJDOS model is, for some materials, a suitable option still providing information about the electronic structure of the material. It is demonstrated that the PDOS model can be successfully applied to a wide variety of materials. In this paper, its application to diamond-like carbon (DLC), a-Si and SiO2-like materials are discussed in detail. Unlike the PDOS model, the presented PJDOS model represents a special case of parameterization that can be applied to limited types of materials, for example DLC, ultrananocrystalline diamond (UNCD) and SiO2-like.

© 2007 Optical Society of America

OCIS Codes
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(160.2750) Materials : Glass and other amorphous materials
(260.2030) Physical optics : Dispersion

ToC Category:
Physical Optics

History
Original Manuscript: October 17, 2007
Revised Manuscript: November 20, 2007
Manuscript Accepted: November 20, 2007
Published: November 21, 2007

Citation
Daniel Franta, David Nečas, and Lenka Zajíčková, "Models of dielectric response in disordered solids," Opt. Express 15, 16230-16244 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-24-16230


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