Doping evolution of the charge excitations and electron correlations in electron-doped superconducting La2−xCexCuO4

@article{Lin2020DopingEO,
  title={Doping evolution of the charge excitations and electron correlations in electron-doped superconducting La2−xCexCuO4},
  author={Jiaqi Lin and Jie Yuan and Kuijuan Jin and Zhiping Yin and Gang Li and K. J. Zhou and Xingye Lu and Marcus Dantz and Thorsten Schmitt and Hong Ding and Haizhong Guo and Mark. P. M. Dean and Xuerong Liu},
  journal={npj Quantum Materials},
  year={2020}
}
Electron correlations play a dominant role in the charge dynamics of the cuprates. We use resonant inelastic X-ray scattering (RIXS) to track the doping dependence of the collective charge excitations in electron doped La$${}_{2-x}$$ 2 − x Ce$${}_{x}$$ x CuO$${}_{4}$$ 4 (LCCO). From the resonant energy dependence and the out-of-plane momentum dependence, the charge excitations are identified as three-dimensional (3D) plasmons, which reflect the nature of… 
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