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Title: Fermi arcs vs. fermi pockets in electron-doped perovskite iridates

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.
 [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [1] ;  [1] ;  [4] ;  [4] ;  [5] ;  [2] ;  [2] ;  [6] ;  [1]
  1. Boston College, Chestnut Hill, MA (United States)
  2. Northeastern Univ., Boston, MA (United States)
  3. Boston College, Chestnut Hill, MA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. SLAC National Accelerator Laboratory, Menlo Park, CA (United States)
  5. Peking University (China)
  6. Boston College, Chestnut Hill, MA (United States); Univ. of California, Santa Barbara, CA (United States)
Publication Date:
OSTI Identifier:
Grant/Contract Number:
FG02-07ER46352; FG02-07ER46352; AC02-76SF00515
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 5; Journal Issue: 3; Journal ID: ISSN 2045-2322
Nature Publishing Group
Research Org:
Boston College, Chestnut Hill, MA (United States)
Sponsoring Org:
Country of Publication:
United States