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arXiv · 1208.3210

Lindhard and RPA susceptibility computations in extended momentum space in electron doped cuprates

Yung Jui Wang·B. Barbiellini·Hsin Lin·Tanmoy Das·Susmita Basak·P. E. Mijnarends·S. Kaprzyk·R. S. Markiewicz·A. Bansil
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Abstract

We present an approximation for efficient calculation of the Lindhard susceptibility $\chi^{L}(q,\omega)$ in a periodic system through the use of simple products of real space functions and the fast Fourier transform (FFT). The method is illustrated by providing $\chi^{L}(q,\omega)$ results for the electron doped cuprate Nd$_{2-x}$Ce$_{x}$CuO$_{4}$ extended over several Brillouin zones. These results are relevant for interpreting inelastic X-ray scattering spectra from cuprates.

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Yung Jui Wang, B. Barbiellini, Hsin Lin, Tanmoy Das, Susmita Basak, P. E. Mijnarends, S. Kaprzyk, R. S. Markiewicz, A. Bansil. 2012-08-15. Lindhard and RPA susceptibility computations in extended momentum space in electron doped cuprates. https://doi.org/10.1103/physrevb.85.224529

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