Fermi Arcs vs. Fermi Pockets in Electron-doped Perovskite Iridates

Junfeng He; H. Hafiz; Thomas R. Mion; T. Hogan; C. Dhital; X. Chen; Qisen Lin; M. Hashimoto; D. H. Lu; Y. Zhang; R. S. Markiewicz; A. Bansil; S. D. Wilson; Rui-Hua He

doi:10.1038/srep08533

Fermi Arcs vs. Fermi Pockets in Electron-doped Perovskite Iridates

Strongly Correlated Electrons 2015-03-20 v1

Authors: Junfeng He , H. Hafiz , Thomas R. Mion , T. Hogan , C. Dhital , X. Chen , Qisen Lin , M. Hashimoto , D. H. Lu , Y. Zhang , R. S. Markiewicz , A. Bansil , S. D. Wilson , Rui-Hua He

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Abstract

We report on an angle resolved photoemission (ARPES) study of bulk electron-doped perovskite iridate, (Sr1-xLax)3Ir2O7. Fermi surface pockets are observed with a total electron count in keeping with that expected from La substitution. Depending on the energy and polarization of the incident photons, these pockets show up in the form of disconnected "Fermi arcs", reminiscent of those reported recently in surface electron-doped Sr2IrO4. Our observed spectral variation is consistent with the coexistence of an electronic supermodulation with structural distortion in the system.

Keywords

angle-resolved photoemission spectroscopy fermi surface

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@article{arxiv.1503.05844,
  title  = {Fermi Arcs vs. Fermi Pockets in Electron-doped Perovskite Iridates},
  author = {Junfeng He and H. Hafiz and Thomas R. Mion and T. Hogan and C. Dhital and X. Chen and Qisen Lin and M. Hashimoto and D. H. Lu and Y. Zhang and R. S. Markiewicz and A. Bansil and S. D. Wilson and Rui-Hua He},
  journal= {arXiv preprint arXiv:1503.05844},
  year   = {2015}
}

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Fermi Arcs vs. Fermi Pockets in Electron-doped Perovskite Iridates

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