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Mott Gap Excitations and Resonant Inelastic X-Ray Scattering in Doped Cuprates

K. Tsutsui·T. Tohyama·S. Maekawa
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Abstract

Predictions are made for the momentum- and carrier-dependent degradation of the Mott gap upon doping in high-Tc cuprates as would be observed in Cu K-edge resonant inelastic x-ray scattering (RIXS). The two-dimensional Hubbard model with second- and third-nearest-neighbor hopping terms has been studied by numerical exact diagonalization. Special emphasis is placed on the particle-hole asymmetry of the Mott gap excitations. We argue that the Mott gap excitations observed by RIXS are significantly influenced by the interaction between charge carriers and antiferromagnetic correlations.

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K. Tsutsui, T. Tohyama, S. Maekawa. 2003-09-08. Mott Gap Excitations and Resonant Inelastic X-Ray Scattering in Doped Cuprates. https://doi.org/10.1103/physrevlett.91.117001

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