fig5

Figure 5. (A) The spin-polarized charge density distribution of a Na₂IrO₃ surface. The top layer of Na is removed for better visualization. The spin-up states (localized at the Ir and O atoms) and the spin-down states (localized in between the Ir and O atoms) are represented with green and yellow contours, respectively. The Na, Ir and O atoms are shown as blue, pink and red circles, respectively. (B) The difference of spin-up and spin-down states of the top Ir and O layers. (C) The top (left) and the side view (right) of the oxygen-decorated Ir tip model. (D) The spin-polarized DOS of the oxygen atom at the apex of the Ir-O tip. (E) Spin-polarized STM simulation imaged with the O-decorated Ir(111) tip (V_b = -1.6 V).