%0 Journal Article
%A Bruno, Flavio Yair
%A García Barriocanal, Javier
%A Varela Del Arco, María
%A Nemes, Norbert Marcel
%A Thakur, Pardeep
%A Cezar, Julio Criginski
%A Brookes, Nicholas B.
%A Rivera Calzada, Alberto Carlos
%A García Hernández, Mar
%A León Yebra, Carlos
%A Okamoto, Satoshi
%A Pennycook, Stephen J.
%A Santamaría Sánchez-Barriga, Jacobo
%T Electronic and Magnetic Reconstructions in La0.7Sr0.3MnO3/SrTiO3 Heterostructures: A Case of Enhanced Interlayer Coupling Controlled by the Interface
%D 2011
%@ 0031-9007
%U https://hdl.handle.net/20.500.14352/91184
%X We report on the magnetic coupling of La0.7Sr0.3MnO3 layers through SrTiO3 spacers in La0.7Sr0.3MnO3/SrTiO3 epitaxial heterostructures. Combined aberration-corrected microscopy and electron-energy-loss spectroscopy evidence charge transfer to the empty conduction band of the titanate. Ti d electrons interact via superexchange with Mn, giving rise to a Ti magnetic moment as demonstrated by x-ray magnetic circular dichroism. This induced magnetic moment in the SrTiO3 controls the bulk magnetic and transport properties of the superlattices when the titanate layer thickness is below 1 nm.
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