2013/04/08 by M. Sperlich, Martin Sperlich, C. König +20
Chemistry · Materials Science · Physics and Astronomy · #Chemistry #Condensed matter physics #Crystallography #Electronic structure #Energy (signal processing) #Fermi level #Heusler alloys: electronic and magnetic properties #Magnetic and transport properties of perovskites and related materials #Materials science #Nuclear magnetic resonance #Nuclear physics #Photoemission spectroscopy #Physics #Quantum mechanics #X-ray photoelectron spectroscopy #ZnO doping and properties #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.87.235138
Manuscript 12 pages, 4 figures; Supplemental material 7 pages, 5 figures
arxiv created 2013/04/08 · openalex publication_date 2013/06/27 · arxiv updated 2015/06/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Bulk-sensitive hard x-ray photoemission spectroscopy (HAXPES) reveals for as-grown epitaxial films of half-metallic ferromagnetic CrO2(100) a pronounced screening feature in the Cr 2p3/2 core level and an asymmetry in the O 1s core level. This gives evidence of a finite, metal-type Fermi edge, which is surprisingly not observed in HAXPES. A spectral weight shift in HAXPES to below the Fermi energy is attributed to single-ion recoil effects due to high-energy photoelectrons. In conjunction with inverse PES the intrinsic correlated Mott-Hubbard-type electronic structure is unraveled, yielding an averaged Coulomb correlation energy Uav \ensuremath≅ 3.2 eV.