2009/10/22 by J. Sánchez‐Barriga, J. Sanchez-Barriga, J. Fink +19 · 116 citations
Physics and Astronomy · #Angle-resolved photoemission spectroscopy #Condensed matter physics #Density functional theory #Dynamical mean field theory #Electronic structure #Ferromagnetism #Magnetic properties of thin films #Many-body theory #Materials science #Mean field theory #Photoemission spectroscopy #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Scattering #Spectral line #Spin (aerodynamics) #Thermodynamics #cond-mat.other #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.103.267203
published in Physical Review Letters 103(26), 267203 (American Physical Society) · 4 pages, 4 figures
arxiv created 2009/10/22 · openalex publication_date 2009/12/23 · arxiv updated 2015/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The strength of electronic correlation effects in the spin-dependent electronic structure of ferromagnetic bcc Fe(110) has been investigated by means of spin and angle-resolved photoemission spectroscopy. The experimental results are compared to theoretical calculations within the three-body scattering approximation and within the dynamical mean-field theory, together with one-step model calculations of the photoemission process. This comparison indicates that the present state of the art many-body calculations, although improving the description of correlation effects in Fe, give too small mass renormalizations and scattering rates thus demanding more refined many-body theories including nonlocal fluctuations.