Interplay of Spin-Orbit Interactions, Dimensionality, and Octahedral Rotations in Semimetallic SrIrO${}_3$

Abstract

We employ reactive molecular-beam epitaxy to synthesize the metastable perovskite SrIrO${}_3$ and utilize {\it in situ} angle-resolved photoemission to reveal its electronic structure as an exotic narrow-band semimetal. We discover remarkably narrow bands which originate from a confluence of strong spin-orbit interactions, dimensionality, and both in- and out-of-plane IrO${}_6$ octahedral rotations. The partial occupation of numerous bands with strongly mixed orbital characters signals the breakdown of the single-band Mott picture that characterizes its insulating two-dimensional counterpart, Sr${}_2$IrO${}_4$, illustrating the power of structure-property relations for manipulating the subtle balance between spin-orbit interactions and electron-electron interactions.

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Cited by in corpus (12)

• Electric-field control of anomalous and topological Hall effects in oxide bilayer thin films
• Spin-orbit semimetal SrIrO${}_3$ in the two-dimensional limit
• Dimensionality-driven metal-insulator-transition in spin-orbit coupled SrIrO${}_3$
• Surface States of Perovskite Iridates AIrO${}_3$; Signatures of Topological Crystalline Metal with Nontrivial ${\mathbb{Z}}_2$ Index
• Slater Insulator in Iridate Perovskites with Strong Spin-Orbit Coupling
• Fabrication of (111)-oriented Ca0.5Sr0.5IrO3/SrTiO3 superlattices; a designed playground for honeycomb physics
• Synthesis and electronic properties of Ruddlesden-Popper strontium iridate epitaxial thin films stabilized by control of growth kinetics
• Spectral functions of Sr${}_2$IrO${}_4$: theory versus experiment
• Persistent semi-metal-like nature of epitaxial perovskite CaIrO3 thin films
• Three-dimensional electronic structures and the metal-insulator transition in Ruddlesden-Popper iridates
• Suppression of twinning and enhanced electronic anisotropy of SrIrO3 films
• Epitaxial stabilization of Sr3Ir2O7 thin films