Fermi Arcs in a Doped Pseudospin-1/2 Heisenberg Antiferromagnet

Abstract

High temperature superconductivity in cuprates arises from an electronic state that remains poorly understood. We report the observation of a related electronic state in a non-cuprate material Sr2IrO4 in which the unique cuprate Fermiology is largely reproduced. Upon surface electron doping through in situ deposition of alkali-metal atoms, angle-resolved photoemission spectra of Sr2IrO4 display disconnected segments of zero-energy states, known as Fermi arcs, and a gap as large as 80 meV. Its evolution toward a normal metal phase with a closed Fermi surface as a function of doping and temperature parallels that in the cuprates. Our result suggests that Sr2IrO4 is a useful model system for comparison to the cuprates.

Science, 12 June 2014

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Cited by in corpus (73)

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• A structural distortion induced magneto-elastic locking in Sr${}_2$IrO${}_4$ revealed through nonlinear optical harmonic generation
• Kitaev-like honeycomb magnets: Global phase behavior and emergent effective models
• First-order melting of a weak spin-orbit Mott insulator into a correlated metal
• Devil's staircase transition of the electronic structures in CeSb
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• Dimensionality-strain phase diagram of strontium iridates
• Strain-engineering of the charge and spin-orbital interactions in Sr2IrO4
• Raman scattering study of vibrational and magnetic excitations in Sr${}_{2-x}$La${}_x$IrO${}_4$
• Nonlocal correlations induced by Hund's coupling: a cluster DMFT study
• Unidirectional spin density wave state in metallic (Sr1-xLax)2IrO4
• Direct experimental observation of the molecular Jeff=3/2 ground state in the lacunar spinel GaTa4Se8
• The Jeff=1/2 antiferromagnet Sr2IrO4: A golden avenue toward new physics and functions
• Strong Pseudospin-Lattice Coupling in Sr3Ir2O7: Coherent Phonon Anomaly and Negative Thermal Expansion
• Doping Evolution of Magnetic Order and Magnetic Excitations in (Sr${}_{1-x}$La${}_x$)${}_3$Ir${}_2$O${}_7$
• First-Principles Calculation of Spin and Orbital Contributions to Magnetically Ordered Moments in Sr${}_2$IrO${}_4$
• Unconventional pairing and electronic dimerization instabilities in the doped Kitaev-Heisenberg model
• Effect of Cu${}^{2+}$ substitution in Spin-Orbit Coupled Sr${}_2$Ir${}_{1-x}$Cu${}_x$O${}_4$: Structure, magnetism and electronic properties
• Spectral functions of Sr${}_2$IrO${}_4$: theory versus experiment
• $J_{eff}=1/2$ Mott Insulating State in Rh and Ir Fluorides
• Momentum-Resolved Visualization of Electronic Evolution in Doping a Mott Insulator
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• Approaching a Minimal Topological Electronic Structure in Antiferromagnetic Topological Insulator MnBi2Te4 via Surface Modification
• Revealing the Coulomb interaction strength in a cuprate superconductor
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• Charge partitioning and anomalous hole doping in Rh-doped Sr2IrO4
• Spin-orbit-enhanced magnetic surface second-harmonic generation in Sr${}_2$IrO${}_4$
• Fermi Arcs vs. Fermi Pockets in Electron-doped Perovskite Iridates
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• La-doping effect on spin-orbit coupled Sr2IrO4 probed by x-ray absorption spectroscopy
• Three-dimensional electronic structures and the metal-insulator transition in Ruddlesden-Popper iridates
• Magnetic properties of bilayer Sr${}_3$Ir${}_2$O${}_7$: role of epitaxial strain and oxygen vacancies
• Possibility to realize spin-orbit-induced correlated physics in iridium fluorides
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• Spectroscopic evidence for electron-boson coupling in electron-doped Sr${}_2$IrO${}_4$
• Tuning the electronic structure of Sr2IrO4 thin films by bulk electronic doping using molecular beam epitaxy
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• Sr${}_2$IrO${}_4$/Sr${}_3$Ir${}_2$O${}_7$ superlattice for a model 2D quantum Heisenberg antiferromagnet
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• Controllable emergent spatial spin modulation in Sr2IrO4 by in situ shear strain
• Giant Spin Gap and Magnon Localization in the Disordered Heisenberg Antiferromagnet Sr2Ir1-xRuxO4
• Charge density functional plus $U$ calculation of lacunar spinel GaM${}_4$Se${}_8$ (M = Nb, Mo, Ta, and W)
• Nonsymmorphic Dirac semimetal and carrier dynamics in doped spin-orbit-coupled Mott insulator Sr${}_2$IrO${}_4$
• Strong anisotropy within a Heisenberg model in the J=1/2 insulating state of Sr2Ir0.8Ru0.2O4
• Compass Impurity Model of Tb Substitution in Sr2IrO4
• Percolative Superconductivity in Electron-Doped Sr${}_{1-x}$Eu${}_x$CuO${}_{2+y}$ Films
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• Single crystal growth of iridates without platinum impurities
• Carrier density crossover and quasiparticle mass enhancement in a doped 5$d$ Mott insulator
• Electronic structure of Fe and magnetism in the $3d/5d$ double perovskites Ca${}_2$FeReO${}_6$ and Ba${}_2$FeReO${}_6$
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• Orbital-selective metal skin induced by alkali-metal-dosing Mott-insulating Ca${}_2$RuO${}_4$
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• Anomalous Fermi pockets on Hund's metal surface of Sr2RuO4 induced by the correlation-enhanced spin-orbit coupling
• Observation of metallic electronic structure in a single-atomic-layer oxide
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• Anomalous Nodal Gap in a Doped Spin-1/2 Antiferromagnetic Mott Insulator
• Possibility of ferro-octupolar order in Ba${}_2$CaOsO${}_6$ assessed by X-ray magnetic dichroism measurements
• High-pressure floating zone crystal growth of Sr${}_2$IrO${}_4$
• Microscopic model realization of $\mathbf{d}$-wave pseudospin current order in Sr${}_2$IrO${}_4$
• Three-dimensional Stacking of Canted Antiferromagnetism and Pseudospin Current in Undoped Sr${}_2$IrO${}_4$: Symmetry Analysis and Microscopic Model Realization
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• Orbital-Selective Spin-Orbit Mott Insulator in Fractional Valence Iridate La${}_3$Ir${}_3$O${}_{11}$
• Fermi surface and pseudogap in highly doped Sr${}_2$IrO${}_4$
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