Abstract
Author(s): Affeldt, G; Hogan, T; Denlinger, JD; Vishwanath, A; Wilson, SD; Lanzara, A | Abstract: We have measured the signatures of electronic energy scales and their doping evolution in the band structure of (Sr1-xLax)3Ir2O7 using angle-resolved photoemission spectroscopy. While band splittings and positions corresponding to the bilayer splitting and spin-orbit coupling undergo only small changes, the Mott gap and effective mass of both the lower Hubbard band and conduction band exhibit strong variations with doping. These changes correspond to similar observations in the cuprate superconductors, and are likely connected to the changing effective Coulomb interaction upon addition of itinerant carriers.
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