In a three-orbital model of bilayer nickelate, nonlocal correlations produce spin-polaron shadow bands below the Fermi level when the gamma quasiparticle band crosses it, depending on interorbital interaction strength.
Interconnected renormalization of Hub- bard bands and Green’s function zeros in Mott insulators induced by strong magnetic fluctuations,
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Co-operating multiorbital and nonlocal correlations in bilayer nickelate
In a three-orbital model of bilayer nickelate, nonlocal correlations produce spin-polaron shadow bands below the Fermi level when the gamma quasiparticle band crosses it, depending on interorbital interaction strength.