Fig. 2: Constant energy maps measured with hν = 21.2 eV and simulated using tight-binding model. | Nature Communications

Fig. 2: Constant energy maps measured with hν = 21.2 eV and simulated using tight-binding model.

From: Mott gap collapse in lightly hole-doped Sr2−xKxIrO4

Fig. 2

a Energy isosurface at EB = 0.3 eV for undoped Sr2IrO4 (left) together with a broadened tight binding + spin–orbit coupling + U calculation, with U = 2 eV (right). All data are shown in a tetragonal Brillouin zone (1 Ir per unit cell), which ignores back-folding due to the in-plane octahedral rotations, which causes a \(\sqrt{2}\times \sqrt{2}\,R4{5}^{\circ }\) reconstruction. b Fermi surface of Sr1.93K0.07IrO4 showing ARPES data (left, averaged ± 20 meV around EF) together with a tight binding and spin–orbit coupling simulation (right) with U = 0 eV; hole and electron pockets are shaded orange and green, respectively. Experimentally extracted kFs are shown as white dots on the tight-binding model simulation.

Back to article page