Excitonic spin density wave state in iron pnictides

Abstract

We examine the appearance of a spin density wave in the FeAs parent compounds due to an excitonic instability. Using a realistic four-band model, we show that the magnetic state depends very sensitively upon the details of the band structure. We demonstrate that an orthorhombic distortion of the crystal enhances the stability of the antiferromagnetic order.

4 pages, 4 figures, RevTeX

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Cited by in corpus (32)

• Preemptive nematic order, pseudogap, and orbital order in the iron pnictides
• Magnetic degeneracy and hidden metallicity of the spin density wave state in ferropnictides
• Superconductivity and spin-density-waves in multi-band metals
• Excitonic condensation in systems of strongly correlated electrons
• Theory of itinerant magnetic excitations in the SDW phase of iron-based superconductors
• Phase diagram and collective excitation in excitonic insulator: from the orbital physics viewpoint
• Spin excitations in the excitonic spin-density-wave state of the iron pnictides
• Spin reorientation driven by the interplay between spin-orbit coupling and Hund's rule coupling in iron pnictides
• Microscopically derived Ginzburg-Landau theory for magnetic order in the iron pnictides
• Roles of Hund's rule coupling in excitonic density-wave states
• Competition between excitonic charge and spin density waves: Influence of electron-phonon and Hund's rule couplings
• Multiorbital Spin Susceptibility in a Magnetically Ordered State - Orbital versus Excitonic Spin Density Wave Scenario
• Quasiparticle interference in iron-based superconductors
• Phase diagram of exciton condensate in doped two-band Hubbard model
• Coexistence between superconducting and spin density wave states in iron-based superconductors: Ginzburg-Landau analysis
• Magnetic order in orbital models of the iron pnictides
• Phase transitions in spin-orbital models with spin-space anisotropies for iron-pnictides: A study through Monte Carlo simulations
• Effect of intraband Coulomb repulsion on the excitonic spin-density wave
• A New Era of Excitonic Insulators
• RKKY interaction in SDW phase of iron-based superconductors
• LDA+DMFT approach to ordering phenomena and the structural stability of correlated materials
• Electric and magnetic multipoles and bond orders in excitonic insulators
• Transport anomalies due to anisotropic interband scattering
• Spectral density in a nematic state of iron pnictides
• Role of Degeneracy, Hybridization, and Nesting in the Properties of Multi-Orbital Systems
• Collective magnetic excitations of $C_4$ symmetric magnetic states in iron-based superconductors
• Tunneling spectroscopy for probing orbital anisotropy in iron pnictides
• Antiferromagnetism in Iron-Based Superconductors: Selection of Magnetic Order and Quasiparticle Interference
• Doping dependence of antiferromagnetism in models of the pnictides
• Breaking of four-fold lattice symmetry in a model for pnictide superconductors
• Electron-hole pairing of Fermi-arc surface states in a Weyl-semimetal bilayer
• Interrupted orbital motion in density-wave systems