Figure 1

Schematics of the oxygen octahedral deformations at the interface between two perovskite oxides. (a) Untilted (blue octahedra) and tilted (beige octahedra) perovskites are connected via an interfacial layer (pink) of undistorted octahedra of intermediate tilt; the continuity of the corner-sharing network is disrupted (note disconnected vertices at interface). (b) The continuity can be restored by distorting the interfacial octahedra. (c) Possible components of the resulting distortion, such as Jahn-Teller elongation, polar off-centering, and additional rotational modes. (d) Slab model with tilt fixed to zero on the left side. Oxygen atoms are in red, $A$-site atoms are in green, and $B$-site atoms are in grey and blue.Reuse & Permissions

Figure 2

Octahedral tilt and rotation angles for ${\mathrm{La}}_{0.75}{\mathrm{Sr}}_{0.25}{\mathrm{MnO}}_3$ as a function of Mn layers along the $z$ axis. The tilt angle is set to zero at the virtual interface plane. The dashed lines indicate the values of corresponding bulk tilt angles (black) and rotation angles (red). (a) Unstrained in-plane lattice. (b) Strained in-plane lattice. (c) Strained in-plane lattice for a larger supercell.Reuse & Permissions

Figure 3

Octahedral tilt and rotation angles, and magnetic moment profile of Ru atoms as a function of Ru layers along $z$-axis in ${\mathrm{SrRuO}}_3$. The dashed lines in (a) unstrained and (b) strained lattices indicate the corresponding bulk tilt angles (black) and rotation angles (red). In (b), two approaches are applied (see text). (c) Magnetic moments in ${\mathrm{SrRuO}}_3$. The tilt angle is set to zero at the virtual interface for unstrained (black solid square) and strained (red circle) ${\mathrm{SrRuO}}_3$. Both tilt and rotation angles are set to zero at the virtual interface for unstrained (blue square) and strained (green triangle) ${\mathrm{SrRuO}}_3$. The dashed line indicates bulk magnetic moment of Ru in unstrained ${\mathrm{SrRuO}}_3$.Reuse & Permissions

Figure 4

Partial density of states of Mn and O ions in unstrained bulk ${\mathrm{La}}_{0.75}{\mathrm{Sr}}_{0.25}{\mathrm{MnO}}_3$ (a); and Ru and O ions in unstrained ${\mathrm{SrRuO}}_3$ (b). The majority spin is plotted as up spin and the minority spin is plotted as down spin.Reuse & Permissions