2006/02/21 by Fabrizio Carbone, Marco Zangrando, Alexander Brinkman +7 · 3 citations
Physics and Astronomy · #Absorption spectroscopy #Advanced Chemical Physics Studies #Atomic physics #Condensed matter physics #Coulomb #Electron #Electronic structure #Ground state #Magnetic properties of thin films #Materials science #Multiplet #Physics #Quantum mechanics #Rare-earth and actinide compounds #Spectral line #Valence (chemistry) #Valence electron #X-ray absorption spectroscopy
paper · pdf · doi:10.1103/physrevb.73.085114
openalex publication_date 2006/02/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We present an experimental study of the electronic structure of MnSi. Using x-ray absorption spectroscopy (XAS), x-ray photoemission, and x-ray fluorescence, we provide experimental evidence that MnSi has a mixed valence ground state. We show that self-consistent local density approximation supercell calculations cannot replicate the XAS spectra of MnSi, while a good match is achieved within the atomic multiplet theory assuming a mixed valence ground state. We discuss the role of the electron-electron interactions in this compound and estimate that the valence fluctuations are suppressed by a factor of 2.5, which means that the Coulomb repulsion is not negligible.