%0 Journal Article
%A Varela Del Arco, María
%A Nemes, Norbert Marcel
%A Rivera Calzada, Alberto Carlos
%A León Yebra, Carlos
%A Santamaría Sánchez-Barriga, Jacobo
%T Electronic and magnetic reconstructions in La_(0.7)Sr_(0.3)MnO_(3)/SrTiO_(3) heterostructures: a case of enhanced interlayer coupling controlled by the interface
%D 2011
%@ 0031-9007
%U https://hdl.handle.net/20.500.14352/44567
%X We report on the magnetic coupling of La_(0.7)Sr_(0.3)MnO_(3) layers through SrTiO_(3)  spacers in La_(0.7)Sr_(0.3)MnO_(3)/SrTiO_(3)  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 SrTiO_(3) controls the bulk magnetic and transport properties of the superlattices when the titanate layer thickness is below 1 nm.
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