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

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.

arXiv comment6 pages, 6 figures, accepted in Physical Review B

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Cited by in corpus (6)

• Intermediate Coupling Model of the Cuprates
• Proposed parameter-free model for interpreting the measured positron annihilation spectra of materials using a generalized gradient approximation
• Quantum-critical pairing in electron-doped cuprates
• Theory of nonlinear interactions between x rays and optical radiation in crystals
• High-temperature cuprate superconductors studied by x-ray Compton scattering and positron annihilation spectroscopies
• Inelastic X-ray scattering from valence electrons near absorption edges of FeTe and TiSe${}_2$