O
O. Strebel
Researcher at Free University of Berlin
Publications - 13
Citations - 1342
O. Strebel is an academic researcher from Free University of Berlin. The author has contributed to research in topics: Superconductivity & Absorption (electromagnetic radiation). The author has an hindex of 10, co-authored 13 publications receiving 1285 citations.
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Journal ArticleDOI
Controlled-valence properties of La1-xSrxFeO3 and La1-xSrxMnO3 studied by soft-x-ray absorption spectroscopy.
M. Abbate,F. M. F. de Groot,J. C. Fuggle,Atsushi Fujimori,O. Strebel,F. Lopez,M. Domke,G. Kaindl,George A. Sawatzky,Mikio Takano,Yasuo Takeda,Hiroshi Eisaki,S. Uchida +12 more
TL;DR: In this paper, a comparison between the transition-metal 2p spectra and atomic-multiplet calculations is used to determine the 3d count of holes induced by substitution for both series are located in states of mixed metal 3d--oxygen 2p character.
Journal ArticleDOI
Soft-x-ray-absorption studies of the location of extra charges induced by substitution in controlled-valence materials.
M. Abbate,F. M. F. de Groot,J. C. Fuggle,Atsushi Fujimori,Yasuhiro Tokura,Y. Fujishima,O. Strebel,M. Domke,G. Kaindl,J. van Elp,B. T. Thole,George A. Sawatzky,Maurizio Sacchi,Nobuo Tsuda +13 more
TL;DR: The spectra of the early-transition-metal compounds show dramatic changes as a function of substitution due to changes in the M 3d occupancy, indicating that the extra holes or electrons are located predominantly at the 3d-metal sites.
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Doping-induced changes in the electronic structure of LaxSr1-xTiO3: Limitation of the one-electron rigid-band model and the Hubbard model.
Atsushi Fujimori,Izumi Hase,Masao Nakamura,Hirofumi Namatame,Y. Fujishima,Yasuhiro Tokura,M. Abbate,F. M. F. de Groot,M. T. Czyżyk,J. C. Fuggle,O. Strebel,F. Lopez,M. Domke,G. Kaindl +13 more
TL;DR: The experimental results are incompatible with the rigid-band behavior predicted by one-electron band theory or Hubbard-model calculations.
Journal ArticleDOI
Orbital character of states at the Fermi level in La 2 − x Sr x CuO 4 and R 2 − x Ce x CuO 4 ( R =Nd,Sm)
E. Pellegrin,N. Nücker,J. Fink,S. L. Molodtsov,Alejandro Gutiérrez,E. Navas,O. Strebel,Zhiwei Hu,M. Domke,G. Kaindl,S. Uchida,Yoshimichi Nakamura,J. Markl,M. Klauda,G. Saemann-Ischenko,A. Krol,J. L. Peng,Zhenyu Li,R. L. Greene +18 more
TL;DR: The experimental results support the picture of a doped charge-transfer insulator and the implication of holes in nonplanar orbitals on high-${\mathit{T}}_{\mathit-c}}$ superconductivity in cuprates is discussed.
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Surface and bulk electronic structure of Ce metal studied by high-resolution resonant photoemission.
TL;DR: In this paper, high-resolution resonant photoemission (PE) at the 4d\ensuremath{\rightarrow}4f and 3d\enuremath{1,ε,γ,γ]-4f thresholds is applied to study the electronic structure of Ce metal.