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Analysis of optical data using extended Drude model and generalized Allen’s formulas.

A new interesting article has been published in J Phys Condens Matter. 2018 Oct 10;30(40):405604. doi: 10.1088/1361-648X/aaddca. Epub 2018 Aug 30. and titled:

Analysis of optical data using extended Drude model and generalized Allen’s formulas.

Authors of this article are:
Hwang J1.

A summary of the article is shown below:
Extended Drude model formalism has been successfully utilized for analyzing optical spectra of strongly correlated electron systems including heavy-fermion systems and high-T c superconducting iron pnictides and cuprates. Furthermore, generalized Allen’s formulas have been developed and applied to extract the electron-boson spectral density function from measured optical data of high temperature superconductors including cuprates in various material phases. Here we used a reverse process to obtain various optical quantities starting from two typical electron-boson spectral density model functions for three intriguing (normal, pseudogap, and d-wave superconducting) material phases in cuprates. We also assigned the calculated optical results to designated regions in the phase diagram of hole-doped cuprates and compared them with the corresponding measured optical spectra of Bi2Sr2CaCu2 [Formula: see text] (Bi-2212). This comparison suggested that this way of optical data analysis can be a convincing method to study correlated electrons in the copper oxide superconductors and other superconducting systems as well.

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