2015/07/31 by Emanuele G. Dalla Torre, David Benjamin, Yang He +3 · 38 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Electron #Friedel oscillations #Iron-based superconductors research #Physics #Physics of Superconductivity and Magnetism #Quantum electrodynamics #Quantum mechanics #Quasiparticle #Rare-earth and actinide compounds #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.93.205117
published in Physical review. B./Physical review. B 93(20) (American Physical Society) · 18 pages, 14 figures, content updated, now including a discussion on c-axis correlations
arxiv created 2016/03/09 · openalex publication_date 2016/05/11 · arxiv updated 2016/05/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
When immersed in a sea of electrons, local impurities give rise to density modulations known as Friedel oscillations. In spite of the generality of this phenomenon, the exact shape of these modulations is usually computed only for noninteracting electrons with a quadratic dispersion relation. In actual materials, Friedel oscillations are a viable way to access the properties of electronic quasiparticles, including their dispersion relation, lifetime, and pairing. In this work we analyze the signatures of Friedel oscillations in STM and x-ray scattering experiments, focusing on the concrete example of cuprate superconductors. We identify signatures of Friedel oscillations seeded by impurities and vortices, and explain experimental observations that have been previously attributed to a competing charge order.