Nature Communications (Jul 2021)

High-order replica bands in monolayer FeSe/SrTiO3 revealed by polarization-dependent photoemission spectroscopy

  • Chong Liu,
  • Ryan P. Day,
  • Fengmiao Li,
  • Ryan L. Roemer,
  • Sergey Zhdanovich,
  • Sergey Gorovikov,
  • Tor M. Pedersen,
  • Juan Jiang,
  • Sangjae Lee,
  • Michael Schneider,
  • Doug Wong,
  • Pinder Dosanjh,
  • Frederick J. Walker,
  • Charles H. Ahn,
  • Giorgio Levy,
  • Andrea Damascelli,
  • George A. Sawatzky,
  • Ke Zou

DOI
https://doi.org/10.1038/s41467-021-24783-5
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 8

Abstract

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The origin of the photoemission replica bands in monolayer FeSe/SrTiO3 remains controversial. Here, the authors perform angle-resolved photoemission spectroscopy with polarized photon on FeSe/SrTiO3 and observe high-order replica bands with high intensity from various Fe 3d bands, suggesting a mixed mechanism.