Structure and Magnetic Properties of the Pyrochlore Iridate Y2Ir2O7

Abstract

Neutron powder diffraction and inelastic measurements were performed examining the 5d pyrochlore Y${}_2$Ir${}_2$O${}_7$. Temperature dependent measurements were performed between 3.4 K and 290 K, spanning the magnetic transition at 155 K. No sign of any structural or disorder induced phase transition was observed over the entire temperature range. In addition, no sign of magnetic long-range order was observed to within the sensitivity of the instrumentation. These measurements do not rule out long range magnetic order, but the neutron powder diffraction structural refinements do put an upper bound for the ordered iridium moment of $\sim$ 0.2 ${\mu }_B/$Ir (for a magnetic structure with wave vector $Q\ne 0$) or $\sim$ 0.5 ${\mu }_B/$Ir (for Q = 0).

5 pages, 8 figures

References in corpus (8)

• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Mott physics and band topology in materials with strong spin-orbit interaction
• Topological and magnetic phases of interacting electrons in the pyrochlore iridates
• The new Cold Neutron Chopper Spectrometer at the Spallation Neutron Source - Design and Performance
• Metal-Nonmetal Changeover in Pyrochlore Iridates
• Emergence of magnetic long-range order in frustrated pyrochlore Nd${}_2$Ir${}_2$O${}_7$ with metal-insulator transition
• Filling Control of the Pyrochlore Oxide Y2Ir2O7
• Spin-Glass-like Transition and Hall Resistivity of Y2-xBixIr2O7

Cited by in corpus (51)

• Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
• Correlated quantum phenomena in the strong spin-orbit regime
• Discovery of Weyl fermion semimetals and topological Fermi arc states
• Weyl, Dirac and high-fold chiral fermions in topological quantum materials
• Theoretical prediction of magnetic and noncentrosymmetric Weyl fermion semimetal states in the R-Al-X family of compounds (R=rare earth, Al=aluminium, X=Si, Ge)
• Correlation effects on 3D topological phases: from bulk to boundary
• Magnetic Order in the Pyrochlore Iridates A2Ir2O7 (A = Y, Yb)
• Magnetic field-induced insulator-semimetal transition in a pyrochlore Nd2Ir2O7
• Metal-insulator transition and topological properties of pyrochlore iridates
• All-in all-out magnetic order and propagating spin-waves in Sm2Ir2O7
• Pyrochlore electrons under pressure, heat and field: shedding light on the iridates
• Enhanced weak ferromagnetism and conductivity in hole-doped pyrochlore iridate Y2Ir2O7
• Phase diagram of pyrochlore iridates: all-in-all-out magnetic ordering and non-Fermi liquid properties
• Coulomb Correlations in 4d and 5d Oxides from First Principles - or How Spin-Orbit Materials choose their Effective Orbital Degeneracies
• Direct Evidence for the 'All-in/All-out' Magnetic Structure in the Pyrochlore Iridates from $\mu$SR
• Direct determination of the spin structure of Nd${}_2$Ir${}_2$O${}_7$ by means of neutron diffraction
• Anisotropy tuned magnetic order in pyrochlore iridates
• X-ray scattering study of pyrochlore iridates: crystal structure, electronic and magnetic excitations
• Magnetic order in pyrochlore iridate Nd${}_2$Ir${}_2$O${}_7$ probed by muon spin relaxation
• Temperature evolution of magnetic and transport behavior in 5\textit{d} Mott insulator Sr${}_2$IrO${}_4$: Significance of magneto-structural coupling
• Evolution of structure, magnetism and electronic transport in doped pyrochlore iridate Y${}_2$Ir${}_{2-x}$Ru${}_x$O${}_7$
• Topological magnons with nodal-line and triple-point degeneracies: Implications for thermal Hall effect in pyrochlore iridates
• A magnetic Weyl semimetallic phase in thin films of Eu${}_2$Ir${}_2$O${}_7$
• Electron interactions, spin-orbit coupling, intersite correlations in pyrochlore iridates
• Epitaxial thin films of pyrochlore iridate Bi_{2+x}Ir_{2-y}O_{7-delta}: structure, defects and transport properties
• Orthogonal Magnetization and Symmetry Breaking in Pyrochlore Iridate Eu2Ir2O7
• Nonequilibrium low temperature phase in pyrochlore iridate Y${}_2$Ir${}_2$O${}_7$: Possibility of glass-like dynamics
• Magnetization and Hall effect studies on the pyrochlore iridate Nd2Ir2O7
• Magnetic excitation spectra in pyrochlore iridates
• Robust pinning of magnetic moments in pyrochlore iridates
• First-principles study on cubic pyrochlore iridates Y2Ir2O7 and Pr2Ir2O7
• Almost pure $J_{\mathrm{eff}}=1/2$ Mott state of In${}_2$Ir${}_2$O${}_7$ in the limit of reduced inter-site hopping
• Direct detection of dimer orbitals in Ba${}_5$AlIr${}_2$O${}_{11}$
• Magnetic and transport properties in pyrochlore iridates (Y${}_{1-x}$Pr${}_x$)${}_2$Ir${}_2$O${}_7$: The role of $f$-$d$ exchange interaction and $d$-$p$ orbital hybridization
• Spin-phonon coupling in hole-doped pyrochlore iridates Y${}_2$(Ir${}_{1-x}$Ru${}_x$)${}_2$O${}_7$: A Raman scattering study
• Spin orientations of the spin-half Ir4+ ions in Sr3NiIrO6, Sr2IrO4 and Na2IrO3: Density functional, perturbation theory and Madelung potential analyses
• Colossal enhancement of electrical conductivity in Y2Ir2O7 nanoparticles
• Theory of Multifarious Quantum Phases and Large Anomalous Hall effect in Pyrochlore Iridate Thin Films
• The interplay between structural, magnetic and electronic states in the pyrochlore iridate Eu2Ir2O7
• Coexistence of high electrical conductivity and weak ferromagnetism in Cr doped Y${}_2$Ir${}_2$O${}_7$ pyrochlore iridate
• Influence of electronic structure parameters on the electrical transport and magnetic properties of $Y_{2-x}B{i}_{x}I{r}_2{O}_7$ pyrochlore iridates
• Evidence of density waves in single crystalline nanowires of Pyrochlore Iridates
• Intrinsic Magnon Nernst Effects in Pyrochlore Iridate Thin Films
• Nonmagnetic substitution in pyrochlore iridate Y${}_2$(Ir${}_{1-x}$Ti${}_x$)${}_2$O${}_7$: Structure, magnetism and electronic properties
• Identification of Griffiths-like phase and its evolution in Cr substituted pyrochlore iridates $Y_{2}I{r}_2{O}_7$
• Unified description of resistivity and thermopower of Pr${}_2$Ir${}_2$O${}_7$: possible influence of crystal field excitation in a Kondo lattice
• Synthesis of epitaxial magnetic pyrochlore heterojunctions
• Metal-insulator transitions in pyrochlore oxides
• Electron quasi-itinerancy intertwined with quantum order by disorder in pyrochlore iridate magnetism
• Dynamics of magnetic collective modes in the square and triangular lattice Mott insulators at finite temperature
• Route to in situ synthesis of epitaxial Pr2Ir2O7 thin films guided by thermodynamic calculations