Theory of the excitonic spin-density-wave state in iron pnictides

2009/03/01 by P. M. R. Brydon, Carsten Timm · 6 citations
Business, Management and Accounting · Materials Science · Physics and Astronomy · #Corporate Taxation and Avoidance #Iron-based superconductors research #Physics of Superconductivity and Magnetism #cond-mat.mtrl-sci #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.79.180504

published as Phys. Rev. B 79, 180504(R) (2009) · 4 pages, 4 figures, RevTeX

arxiv created 2009/03/01 · openalex publication_date 2009/05/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

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 on the details of the band structure. We demonstrate that an orthorhombic distortion of the crystal enhances the stability of the antiferromagnetic order.

Cited by

• Superconductivity and spin-density waves in multiband metals
• Theory of itinerant magnetic excitations in the spin-density-wave phase of iron-based superconductors
• Electric and magnetic multipoles and bond orders in excitonic insulators
• RKKY interaction in the spin-density-wave phase of iron-based superconductors
• Phase transitions in spin-orbital models with spin-space anisotropies for iron pnictides: Monte Carlo simulations
• Quasiparticle interference in iron-based superconductors

Related

• Orbital order, spin waves, and doping effects in the (π,0) SDW state --- comparative study of the three band models for iron pnictides
• Role of Dirac cones in the anisotropic properties associated with the spin-density wave state of iron pnictides
• Magnetic excitations in iron pnictides
• Dual Character of Magnetism in Ferropnictides: Insights from Optical Measurements
• Interplay of orbital and spin ordering in the iron pnictides