2015/03/31 by László Oroszlány, András Deák, Eszter Simon +4 · 40 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Atomic physics #Condensed matter physics #Density of states #Electron #Electronic structure #Fermi level #Fermi surface #Ferromagnetism #Gadolinium #Ground state #Magnetic and transport properties of perovskites and related materials #Magnetic moment #Magnetism #Materials science #Paramagnetism #Physics #Quantum mechanics #Rare-earth and actinide compounds #Spin (aerodynamics) #Surface (topology) #Surface states #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.115.096402
published in Physical Review Letters 115(9), 096402 (American Physical Society)
arxiv created 2015/03/31 · openalex publication_date 2015/08/26 · arxiv updated 2015/09/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
By calculating the spectral density of states in the ferromagnetic ground state and in the high temperature paramagnetic phase we provide the first concise study of finite temperature effects on the electronic structure of the bulk and the surface of gadolinium metal. The variation of calculated spectral properties of the Fermi surface and the density of states in the bulk and at the surface are in good agreement with recent photoemission experiments performed in both ferromagnetic and paramagnetic phases. In the paramagnetic state we find vanishing spin splitting of the conduction band, but finite local spin moments both in bulk and at the surface. We clearly demonstrate that the formation of these local spin moments in the conduction band is due to the asymmetry of the density of states in the two spin channels, suggesting a complex, non-Stoner behavior. We, therefore, suggest that the vanishing or nearly vanishing spin splitting of spectral features cannot be used as an indicator for Stoner-like magnetism.