Articles written in Pramana – Journal of Physics
Volume 54 Issue 3 March 2000 pp 431-440 Research Articles
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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