Strain-induced nonsymmorphic symmetry breaking and removal of Dirac semimetallic nodal line in an orthoperovskite iridate

Abstract

By using a combination of heteroepitaxial growth, structure refinement based on synchrotron x-ray diffraction and first-principles calculations, we show that the symmetry-protected Dirac line nodes in the topological semimetallic perovskite SrIrO3 can be lifted simply by applying epitaxial constraints. In particular, the Dirac gap opens without breaking the Pbnm mirror symmetry. In virtue of a symmetry-breaking analysis, we demonstrate that the original symmetry protection is related to the n-glide operation, which can be selectively broken by different heteroepitaxial structures. This symmetry protection renders the nodal line a nonsymmorphic Dirac semimetallic state. The results highlight the vital role of crystal symmetry in spin-orbit-coupled correlated oxides and provide a foundation for experimental realization of topological insulators in iridate-based heterostructures.

7 pages, 7 figures

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Cited by in corpus (38)

• Topological Nodal Line Semimetals in CaP3 family of materials
• Symmetry Demanded Topological Nodal-line Materials
• The Challenge of Spin-Orbit-Tuned Ground States in Iridates
• Atomic-scale control of magnetic anisotropy via novel spin-orbit coupling effect in La2/3Sr1/3MnO3/SrIrO3 superlattices
• Spin-orbit semimetal SrIrO${}_3$ in the two-dimensional limit
• Observation of Dirac-like energy band and ring-torus Fermi surface associated with the nodal line in topological insulator CaAgAs
• Topological semimetals protected by off-centered symmetries in nonsymmorphic crystals
• Dimensionality-driven metal-insulator-transition in spin-orbit coupled SrIrO${}_3$
• Direct observation of the Dirac nodes lifting in semimetallic perovskite SrIrO3 thin films
• Two-dimensional $J_{\mathrm{eff}}$ = 1/2 antiferromagnetic insulator unraveled from interlayer exchange coupling in artificial perovskite iridate superlattices
• A Family Group of Two-dimensional Node-Line Semimetals
• Epitaxial growth and thermodynamic stability of SrIrO3/SrTiO3 heterostructures
• Theory of Large Intrinsic Spin Hall Effect in Iridate Semimetals
• Type-I and type-II Nodal Lines Coexistence in the Antiferromagnetic monolayer CrAs${}_2$
• Crossing-Line-Node Semimetals: General Theory and Application to Rare-Earth Trihydrides
• Review of Spin Orbit Coupled Semimetal SrIrO3 in thin film form
• Dimensionality-strain phase diagram of strontium iridates
• Balanced electron-hole transport in spin-orbit semimetal SrIrO3 heterostructures
• Growth and engineering of perovskite SrIrO3 thin films
• Novel spin-orbit coupling driven emergent states in iridate-based heterostructures
• Observation of Nonlinear Spin-Charge Conversion in the Thin Film of Nominally Centrosymmetric Dirac Semimetal SrIrO3 at Room Temperature
• Coupling lattice instabilities across the interface in ultrathin oxide heterostructures
• Structural properties and anisotropic electronic transport in SrIrO3 films
• Pseudo-Landau levels of Bogoliubov quasiparticles in strained nodal superconductors
• Substrate-tuning of correlated spin-orbit oxides
• Abrupt Enhancement of Spin-Orbit Scattering Time in Ultrathin Semimetallic SrIrO${}_3$ Close to the Metal-Insulator Transition
• Magnetic properties of bilayer Sr${}_3$Ir${}_2$O${}_7$: role of epitaxial strain and oxygen vacancies
• Anisotropy and interaction effects of strongly strained SrIrO3 thin films
• Nodal line semimetal states in positive electrode material of lead-acid battery: Lead dioxide family and its derivatives
• Drumhead surface states and their signatures in quasiparticle scattering interference
• Suppression of twinning and enhanced electronic anisotropy of SrIrO3 films
• Strain Effects on Band Structure and Dirac Nodal-line Morphology of ZrSiSe
• Tunneling Conductance in a Two-dimensional Dirac Semimetal Protected by Non-symmorphic Symmetry
• Epitaxial stabilization of Sr3Ir2O7 thin films
• Growth facets of SrIrO3 Thin Films and Single Crystals
• Hidden structural transition in epitaxial Ca${}_{0.5}$Sr${}_{0.5}$IrO${}_3$/SrTiO${}_3$ thin film
• Epitaxial growth and antiferromagnetism of Sn-substituted perovskite iridate SrIr${}_{0.8}$Sn${}_{0.2}$O${}_3$
• Magnetism in artificial Ruddlesden-Popper iridates leveraged by structural distortions