TY - JOUR
T1 - Electronic and magnetic reconstructions in La0.7Sr 0.3MnO3/SrTiO3 heterostructures
T2 - A case of enhanced interlayer coupling controlled by the interface
AU - Bruno, F. Y.
AU - Garcia-Barriocanal, J.
AU - Varela, M.
AU - Nemes, N. M.
AU - Thakur, P.
AU - Cezar, J. C.
AU - Brookes, N. B.
AU - Rivera-Calzada, A.
AU - Garcia-Hernandez, M.
AU - Leon, C.
AU - Okamoto, S.
AU - Pennycook, S. J.
AU - Santamaria, J.
PY - 2011/4/8
Y1 - 2011/4/8
N2 - We report on the magnetic coupling of La0.7Sr 0.3MnO3 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 1μnm.
AB - We report on the magnetic coupling of La0.7Sr 0.3MnO3 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 1μnm.
UR - http://www.scopus.com/inward/record.url?scp=79959667324&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.106.147205
DO - 10.1103/PhysRevLett.106.147205
M3 - Article
AN - SCOPUS:79959667324
SN - 0031-9007
VL - 106
JO - Physical Review Letters
JF - Physical Review Letters
IS - 14
M1 - 147205
ER -