• Sangeeta Sharma

      Articles written in Pramana – Journal of Physics

    • Optical properties of 1T and 2H phase of TaS2 and TaSe2

      Sangeeta Sharma S Auluck M A Khan

      More Details Abstract Fulltext PDF

      We have calculated the anisotropic frequency dependent dielectric function for the 1T and 2H phases of TaS2 and TaSe2 using the linear muffin tin orbital method within the atomic sphere approximation. We find significant anisotropy in the frequency dependent dielectric function for the 1T and 2H phases at low energies (less than 4 eV). Unfortunately there are no experimental data to compare with. The averaged dielectric function agrees with the available experimental data except that the calculated peak heights are underestimated and shifted to higher energies by 1–2eV.

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