Russian Journal of Physical Chemistry A

, Volume 89, Issue 13, pp 2422–2425 | Cite as

Valence band gaps and plasma energies for galena, sphalerite, and chalcopyrite natural minerals using differential optical reflectance spectroscopy

  • R. Todoran
  • D. Todoran
  • Zs. SzakacsEmail author
Structure of Matter and Quantum Chemistry


The paper presents the determinations of the valence band gaps and plasma energies of the galena, sphalerite and chalcopyrite natural minerals. The work was carried out using differential optical reflectance spectroscopy of the clean mineral surfaces. The determination of the optical properties such as refractive index, real part of the complex dielectric constant and the location of certain van Hove singularities, was carried out using the Kramers–Kronig formalism.


galena sphalerite chalcopyrite electronic properties differential optical reflectance spectroscopy 


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© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  1. 1.Technical University of Cluj NapocaNorth University Centre of Baia MareBaia MareRomania

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