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We determine the motion of a charge (hole or electron) added to the Mottinsulating, antiferromagnetic (AF) ground-state of quasi-2D iridates such as Ba2 IrO 4 or Sr 2 IrO 4 . We show that correlation effects, calculated within theself-consistent Born approximation, render the hole and electron case verydifferent. An added electron forms a spin-polaron, which closely resembles thewell-known cuprates, but the situation of a removed electron is far morecomplex. Many-body 5d 4 configurations form which can be singlet and tripletsof total angular momentum J and strongly affect the hole motion between AFsublattices. This not only has important ramifications for the interpretationof (inverse-)photoemission experiments of quasi-2D iridates but alsodemonstrates that the correlation physics in electron- and hole-doped iridatesis fundamentally different.

Correlation induced electron-hole asymmetry in quasi-2D iridates