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 (26)

• 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${}_3$
• Emergent electric field control of phase transformation in oxide superlattices
• 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
• Spin-orbit torque generation in NiFe/IrO2 bilayers
• Spectral functions of Sr${}_2$IrO${}_4$: theory versus experiment
• Strange semimetal dynamics in SrIrO${}_3$
• Persistent semi-metal-like nature of epitaxial perovskite CaIrO3 thin films
• Low temperature ferromagnetism in perovskite SrIrO${}_3$ films
• Three-dimensional electronic structures and the metal-insulator transition in Ruddlesden-Popper iridates
• Electric field driven octahedral rotation in perovskite
• Electron-plasmon interaction induced plasmonic-polaron band replication in epitaxial perovskite SrIrO${}_3$ films
• Spin-orbit torque generation in bilayers composed of CoFeB and epitaxial SrIrO${}_3$ grown on an orthorhombic DyScO${}_3$ substrate
• Suppression of twinning and enhanced electronic anisotropy of SrIrO3 films
• Magnetotransport of SrIrO3 films on (110) DyScO3
• Epitaxial stabilization of Sr3Ir2O7 thin films
• Epitaxial growth and antiferromagnetism of Sn-substituted perovskite iridate SrIr${}_{0.8}$Sn${}_{0.2}$O${}_3$
• Emergent topological states via digital (001) oxide superlattices
• Hidden structural transition in epitaxial Ca${}_{0.5}$Sr${}_{0.5}$IrO${}_3$/SrTiO${}_3$ thin film
• Strain tunable electronic ground states in two-dimensional iridate thin films
• Anomalous Fermi pockets on Hund's metal surface of Sr2RuO4 induced by the correlation-enhanced spin-orbit coupling
• Magnetic ordering in the $J_{\mathrm{eff}}$ = 0 Nickelate NiRh${}_2$O${}_4$ prepared via a solid-state metathesis