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Title: Acoustic plasmons and doping evolution of Mott physics in resonant inelastic x-ray scattering from cuprate superconductors

Journal Article · · Phys. Rev. B

By incorporating a long-range Coulomb interaction into the framework of the one-band Hubbard model, they 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 control sthe form of the intraband RIXS dispersion near the Brillouin zone center around the {Gamma} point. The out-of-plane momentum transfer component q{sub z} is found to play a key role in determining whether or not the RIXS spectrum shows a plasmon-related gap at {Gamma}.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
OSTI ID:
1006074
Journal Information:
Phys. Rev. B, Vol. 77, Issue (9) ; 2009; ISSN 1098-0121
Country of Publication:
United States
Language:
ENGLISH