TY - JOUR
T1 - Intrinsic correlated electronic structure of CrO2 revealed by hard x-ray photoemission spectroscopy
AU - Sperlich, M.
AU - König, C.
AU - Güntherodt, G.
AU - Sekiyama, A.
AU - Funabashi, G.
AU - Tsunekawa, M.
AU - Imada, S.
AU - Shigemoto, A.
AU - Okada, K.
AU - Higashiya, A.
AU - Yabashi, M.
AU - Tamasaku, K.
AU - Ishikawa, T.
AU - Renken, V.
AU - Allmers, T.
AU - Donath, M.
AU - Suga, S.
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013/6/27
Y1 - 2013/6/27
N2 - 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 ≅ 3.2 eV.
AB - 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 ≅ 3.2 eV.
UR - http://www.scopus.com/inward/record.url?scp=84879727462&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879727462&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.87.235138
DO - 10.1103/PhysRevB.87.235138
M3 - Article
AN - SCOPUS:84879727462
SN - 1098-0121
VL - 87
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 23
M1 - 235138
ER -