Molecular orbital excitations in cuprates

Abstract

We report resonant inelastic x-ray scattering studies of electronic excitations in a wide variety of cuprate compounds. Specifically, we focus on the charge-transfer type excitation of an electron from a bonding molecular orbital to an antibonding molecular orbital in a copper oxygen plaquette. Both the excitation energy and the amount of dispersion are found to increase significantly as the copper oxygen bond-length is reduced. We also find that the estimated bond-length dependence of the hopping integral t_pd is much stronger than that expected from tight-binding theory.

6 pages, 3 figures

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• Electronic States and Magnetic Propertis of Edge-sharing Cu-O Chains
• Electronic Structure of Mott Insulators Studied by Inelastic X-ray Scattering
• Resonant inelastic x-ray scattering study of charge excitations in La2CuO4
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Cited by in corpus (12)

• Resonant Inelastic X-ray Scattering Studies of Elementary Excitations
• Unraveling the Nature of Charge Excitations in La${}_2$CuO${}_4$ with Momentum-Resolved Cu $K$-edge Resonant Inelastic X-ray Scattering
• Charge-Transfer Excitations in the Model Superconductor HgBa${}_2$CuO${}_{4+\delta }$
• Resonant inelastic x-ray scattering in electronically quasi-zero-dimensional CuB2O4
• Charge excitations associated with charge stripe order in the 214-type nickelate and superconducting cuprate
• Momentum dependent light scattering in insulating cuprates
• Lattice coupling and Franck-Condon effects in K-edge resonant inelastic X-ray scattering
• Polarization dependence and symmetry analysis in indirect K-edge RIXS
• Resonant inelastic X-ray scattering study of overdoped La${}_{2-x}$Sr${}_x$CuO${}_4$
• Resonant inelastic X-ray scattering study of intra-band charge excitations in hole-doped high-Tc cuprates
• Spectral Function of a $d-p$ Hubbard Model
• Post-growth annealing effects on charge and spin excitations in Nd${}_{2-x}$Ce${}_x$CuO${}_4$