Abstract
By incorporating a long-range Coulomb interaction into the framework of the one-band Hubbard model, we delineate how the low-energy plasmon around 1 eV, which is a universal feature of the charge dynamics of the cuprates, manifests itself in the resonant inelastic x-ray scattering (RIXS) spectra. The long-range Coulomb interaction in the doped system controls the form of the intraband RIXS dispersion near the Brillouin zone center around the Γ point. The out-of-plane momentum transfer component qz is found to play a key role in determining whether or not the RIXS spectrum shows a plasmon-related gap at Γ.
Keywords
Coulomb interaction, doping evolution, Mott physics
Subject Categories
Plasmons (Physics), Superconductors, X-rays - Scattering, Hubbard model
Disciplines
Physics
Publisher
American Physical Society
Publication Date
3-25-2008
Rights Information
Copyright 2008 American Physical Society.
Rights Holder
American Physical Society
Recommended Citation
Markiewicz, R. S.; Hasan, M. Z.; and Bansil, A., "Acoustic plasmons and doping evolution of Mott physics in resonant inelastic x-ray scattering from cuprate superconductors" (2008). Physics Faculty Publications. Paper 354.
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Notes
Originally published in Physical Review B v.77 (2008): 094518. DOI: 10.1103/PhysRevB. 77.094518