Charge Excitations in Nd${}_{2-x}$Ce${}_x$CuO${}_4$ Observed with Resonant Inelastic X-ray Scattering: Comparison of Cu K-edge with Cu L${}_3$-edge

Abstract

We report a Cu K-edge resonant inelastic x-ray scattering (RIXS) study of momentum-dependent charge excitations in Nd${}_{2-x}$Ce${}_x$CuO${}_4$ ($x$ = 0.075 and 0.18). The peak position and width of the excitations coincide excellently with those observed in Cu L${}_3$-edge RIXS. It demonstrates that the same charge excitations are observed at the two edges.

6 pages, 2 figures

References in corpus (3)

• High-energy spin and charge excitations in electron-doped copper oxide superconductors
• Momentum Dependence of Charge Excitations in the Electron-Doped Superconductor Nd1.85Ce0.15CuO4: a RIXS Study
• Resonant inelastic x-ray scattering spectrometer with 25 meV resolution at Cu K-edge

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• Collective spin and charge excitations in the $t$-$J$-$U$ model of high-$T_c$ cuprates
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