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An Alternative Approach to the Extended Drude Model

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The original Drude model, proposed over a hundred years ago, is still used today for the analysis of optical properties of solids. Within this model, both the plasma frequency and quasiparticle scattering rate are constant, which makes the model rather inflexible. In order to circumvent this problem, the so-called extended Drude model was proposed, which allowed for the frequency dependence of both the quasiparticle scattering rate and the effective mass. In this work we will explore an alternative approach to the extended Drude model. Here, one also assumes that the quasiparticle scattering rate is frequency dependent; however, instead of the effective mass, the plasma frequency becomes frequency-dependent. This alternative model is applied to the high Tc superconductor Bi2Sr2CaCu2O8+δ (Bi2212) with Tc = 92 K, and the results are compared and contrasted with the ones obtained from the conventional extended Drude model. The results point to several advantages of this alternative approach to the extended Drude model.

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Authors and Affiliations

  1. University of Akron, Akron, Ohio, 44325, USA

    N. J. Gantzler & S. V. Dordevic

Authors
  1. N. J. Gantzler
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  2. S. V. Dordevic
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Correspondence to N. J. Gantzler.

Additional information

Published in Zhurnal Prikladnoi Spektroskopii, Vol. 85, No. 2, pp. 347–350, March–April, 2018.

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Gantzler, N.J., Dordevic, S.V. An Alternative Approach to the Extended Drude Model. J Appl Spectrosc 85, 361–364 (2018). https://doi.org/10.1007/s10812-018-0657-x

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  • DOI: https://doi.org/10.1007/s10812-018-0657-x

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