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Real-space Eliashberg approach to charge order of electrons coupled to dynamic antiferromagnetic fluctuations

2015/06/19 by J. Bauer, Johannes Bauer, Subir Sachdev
Materials Science · Physics and Astronomy · #Antiferromagnetism #Charge (physics) #Computer science #Condensed matter physics #Economics #Electron #Order (exchange) #Organic and Molecular Conductors Research #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Space (punctuation) #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.92.085134

published as Phys. Rev. B 92, 085134 (2015) · 9 pages, 8 figures

arxiv created 2015/06/19 · openalex publication_date 2015/08/20 · arxiv updated 2015/08/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We study charge-ordered solutions for fermions on a square lattice interacting with dynamic antiferromagnetic fluctuations. Our approach is based on real-space Eliashberg equations, which are solved self-consistently. We first show that the antiferromagnetic fluctuations can induce arc features in the spectral functions, as spectral weight is suppressed at the hot spots; however, no real pseudogap is generated. At low temperature, spontaneous charge order with a d-form factor can be stabilized for certain parameters. As long as the interacting Fermi surfaces possess hot spots, the ordering wave vector corresponds to the diagonal connection of the hot spots, similar to the non-self-consistent case. Tendencies towards observed axial order only appear in situations without hot spots.

Citations