Spin-orbit semimetal SrIrO${}_3$ in the two-dimensional limit

Abstract

We investigate the thickness-dependent electronic structure of ultrathin SrIrO${}_3$ and discover a transition from a semimetallic to a correlated insulating state below 4 unit cells. Low-temperature magnetoconductance measurements show that spin fluctuations in the semimetallic state are significantly enhanced while approaching the transition point. The electronic structure is further studied by scanning tunneling spectroscopy, showing that 4 unit cells SrIrO${}_3$ is on the verge of a gap opening. Our density functional theory calculations reproduce the critical thickness of the transition and show that the opening of a gap in ultrathin SrIrO${}_3$ is accompanied by antiferromagnetic order.

arXiv comment6 pages, 4 figures

References in corpus (26)

• Restoring the density-gradient expansion for exchange in solids and surfaces
• Generalized gradient approximation for solids and their surfaces
• Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
• Mott transition and suppression of orbital fluctuations in orthorhombic 3$d^1$ perovskites
• Dimensionality Control of Electronic Phase Transitions in Nickel-Oxide Superlattices
• Metal-insulator transition in ultrathin LaNiO3 films
• Semimetal and Topological Insulator in Perovskite Iridates
• Interplay of Spin-Orbit Interactions, Dimensionality, and Octahedral Rotations in Semimetallic SrIrO${}_3$
• Engineering spin-orbital magnetic insulator by tailoring superlattices
• Metal insulator transitions in perovskite SrIrO3 thin films
• Interplay between spin-orbit coupling and Hubbard interaction in SrIrO3 and related Pbnm perovskites
• Visualizing the evolution from the Mott insulator to a charge ordered insulator in lightly doped cuprates
• Universality of pseudogap and emergent order in lightly doped Mott insulators
• Dimensionality-driven metal-insulator-transition in spin-orbit coupled SrIrO${}_3$
• Direct observation of the Dirac nodes lifting in semimetallic perovskite SrIrO3 thin films
• Strain-induced nonsymmorphic symmetry breaking and removal of Dirac semimetallic nodal line in an orthoperovskite iridate
• Imaging nano-scale electronic inhomogeneity in lightly doped Mott insulator Ca_{2-x}Na_{x}CuO_{2}Cl_{2}
• Tunable Semimetallic State in Compressive-strained SrIrO3 Films Revealed by Transport Behaviors
• Structural origins of the properties of rare earth nickelate superlattices
• Two-dimensional $J_{\mathrm{eff}}$ = 1/2 antiferromagnetic insulator unraveled from interlayer exchange coupling in artificial perovskite iridate superlattices
• Epitaxial growth and thermodynamic stability of SrIrO3/SrTiO3 heterostructures
• Surface States of Perovskite Iridates AIrO${}_3$; Signatures of Topological Crystalline Metal with Nontrivial ${\mathbb{Z}}_2$ Index
• Theoretical study of insulating mechanism in multi-orbital Hubbard models with a large spin-orbit coupling: Slater versus Mott scenario in Sr${}_2$IrO${}_4$
• Electronic Structure and Magnetic Properties of Iridate Superlattice SrIrO${}_3$/SrTiO${}_3$
• Thermoelectric behavior of Ruddlesden-Popper series iridates
• Metal-Insulator Transition and Jeff = 1/2 Spin-Orbit Insulating State in Rutile-based IrO2/TiO2 Superlattices

Cited by in corpus (36)

• Anisotropic spin-orbit torque generation in epitaxial SrIrO3 by symmetry design
• Dimensionality-driven metal-insulator-transition in spin-orbit coupled SrIrO${}_3$
• Berry phase engineering at oxide interfaces
• Perspective on Epitaxial NiCo2O4 Film as an Emergent Spintronic Material: Magnetism and Transport Properties
• Probing Emergent Surface and Interfacial Properties in Complex Oxides via in situ X-ray Photoelectron Spectroscopy
• Balanced electron-hole transport in spin-orbit semimetal SrIrO3 heterostructures
• A many-body approach to transport in quantum systems: From the transient regime to the stationary state
• Spin-orbit torque generation in NiFe/IrO2 bilayers
• Anomalous Hall Effect and Perpendicular Magnetic Anisotropy in Ultrathin Ferrimagnetic NiCo${}_2$O${}_4$ Films
• Coupling lattice instabilities across the interface in ultrathin oxide heterostructures
• Observation of Nonlinear Spin-Charge Conversion in the Thin Film of Nominally Centrosymmetric Dirac Semimetal SrIrO3 at Room Temperature
• Structural properties and anisotropic electronic transport in SrIrO3 films
• Strange semimetal dynamics in SrIrO${}_3$
• Stacking effect and Coulomb correlation in layered charge density wave phase of 1T-NbS2
• Perovskite oxide heterojunction for Rashba-Dresselhaus assisted antiferromagnetic spintronics
• Abrupt Enhancement of Spin-Orbit Scattering Time in Ultrathin Semimetallic SrIrO${}_3$ Close to the Metal-Insulator Transition
• Spin-orbit effects in pentavalent Iridates: Models and materials
• Anomalous Magnetoresistance due to Longitudinal Spin Fluctuations in a Jeff = 1/2 Mott Semiconductor
• Spin-orbit coupling driven insulating state in hexagonal iridates Sr3MIrO6 (M = Sr, Na and Li)
• Stabilization of the perovskite phase in the Y-Bi-O system by using a BaBiO${}_3$ buffer layer
• Interface induced exchange bias effect in La${}_{0.67}$Sr${}_{0.33}$MnO${}_3$/SrIrO${}_3$ multilayer
• Isostructural Metal-Insulator Transition Driven by Dimensional-Crossover in SrIrO3 Heterostructures
• High magnetic field evolution of the in-plane angular magnetoresistance of electron-doped Sr1-xLaxCuO2 in the normal state
• Spin-orbit torque generation in bilayers composed of CoFeB and epitaxial SrIrO${}_3$ grown on an orthorhombic DyScO${}_3$ substrate
• Spin current generation from an epitaxial tungsten dioxide WO${}_2$
• Strain-dependent Insulating State and Kondo Effect in Epitaxial SrIrO${}_3$ Films
• Magnetotransport of SrIrO3 films on (110) DyScO3
• Magnetic interlayer coupling between ferromagnetic SrRuO${}_3$ layers through a SrIrO${}_3$ spacer
• Anomalous pressure dependence of the electronic transport and anisotropy in SrIrO3 films
• Induction of Large Magnetic Anisotropy Energy and Formation of Multiple Dirac States in SrIrO${}_3$ Films: Role of correlation and spin-orbit coupling
• Inducing ferromagnetism by structural engineering in a strongly spin-orbit coupled oxide
• Strain tunable electronic ground states in two-dimensional iridate thin films
• Coexistence of insulator-like paramagnon and metallic spin-orbit exciton modes in SrIrO${}_3$
• In-gap states and strain-tuned band convergence in layered structure trivalent iridate K0.75Na0.25IrO2
• Asymmetric magnetoresistance in 3$d$-5$d$ based La${}_{0.67}$Ca${}_{0.33}$MnO${}_3$/SrIrO${}_3$ bilayer: The role of unidirectional anisotropy
• Evidence for strong electron correlations in a non-symmorphic Dirac semimetal