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Effect of the capping on the local Mn oxidation state in buried (001) and (110) SrTiO3/La2/3Ca1/3MnO3 interfaces
Estradé Albiol, Sònia; Rebled, J. M. (José Manuel); Walls, M.; Peña, F. de la; Colliex, C.; Córdoba, R.; Infante, I. C.; Herranz Casabona, Gervasi; Sánchez Barrera, Florencio; Fontcuberta i Griñó, Josep; Peiró Martínez, Francisca
Universitat de Barcelona
The electronic stability of (001) and (110) surfaces of La2/3Ca1/3MnO3 (LCMO) capped with nanometric SrTiO3 (STO) layers in epitaxial heterostructures is addressed by (S)TEM electron energy loss spectroscopy. It is found that growth of STO on (001)LCMO promotes a significant electron doping of LCMO that extends a few nanometers deep into the film. In contrast, (110)LCMO appears to be electronically more robust and no electronic reordering has been observed. These results are in clear correlation with the distinct magnetic properties observed in those interfaces and illustrate that complex chemical phenomena take place at interfaces among multivalent oxides. VC 2011 American Institute of Physics.
Espectroscòpia de pèrdua d'energia d'electrons
Propietats magnètiques
Nanociència
Compostos inorgànics
Electron energy loss spectroscopy
Magnetic properties
Nanoscience
Inorganic compounds
(c) American Institute of Physics , 2011
Article
info:eu-repo/semantics/publishedVersion
American Institute of Physics
         

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