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.
Original language | English (US) |
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Article number | 094518 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 77 |
Issue number | 9 |
DOIs | |
State | Published - Mar 25 2008 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics