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Author Kitamura, Miho ♦ Horiba, Koji ♦ Kobayashi, Masaki ♦ Sakai, Enju ♦ Minohara, Makoto ♦ Mitsuhashi, Taichi ♦ Kumigashira, Hiroshi ♦ Fujimori, Atsushi ♦ Nagai, Takuro ♦ Fujioka, Hiroshi
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ABSORPTION SPECTROSCOPY ♦ ELECTRON TRANSFER ♦ LANTHANUM COMPOUNDS ♦ LAYERS ♦ MANGANATES ♦ NICKEL IONS ♦ OXIDES ♦ PEROVSKITE ♦ SPATIAL DISTRIBUTION ♦ SPECTRA ♦ THICKNESS ♦ THOMAS-FERMI MODEL ♦ TRANSITION ELEMENTS ♦ X-RAY SPECTROSCOPY
Abstract To investigate the interfacial charge-transfer phenomena between perovskite transition metal oxides LaNiO{sub 3} (LNO) and LaMnO{sub 3} (LMO), we have performed in situ x-ray absorption spectroscopy (XAS) measurements on LNO/LMO multilayers. The Ni-L{sub 2,3} and Mn-L{sub 2,3} XAS spectra clearly show the occurrence of electron transfer from Mn to Ni ions in the interface region. Detailed analysis of the thickness dependence of these XAS spectra has revealed that the spatial distribution of the transferred charges across the interface is significantly different between the two constituent layers. The observed spatial distribution is presumably described by the charge spreading model that treats the transfer integral between neighboring transition metal ions and the Coulomb interaction, rather than the Thomas–Fermi screening model.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-03-14
Publisher Place United States
Journal Applied Physics Letters
Volume Number 108
Issue Number 11


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