Electronic and Magnetic Reconstructions inLa0.7Sr0.3MnO3/SrTiO3Heterostructures: A Case of Enhanced Interlayer Coupling Controlled by the Interface | Zendy

F. Y. Bruno | Zendy; Javier GarcíaBarriocanal | Zendy; M. Varela | Zendy; N. M. Nemes | Zendy; P. Thakur | Zendy; J. C. Cezar | Zendy; N. B. Brookes | Zendy; A. Rivera | Zendy; M. GarcíaHernández | Zendy; C. León | Zendy; Satoshi Okamoto | Zendy; Stephen J. Pennycook | Zendy; J. Santamarı́a | Zendy

Open Access

Electronic and Magnetic Reconstructions inLa0.7Sr0.3MnO3/SrTiO3Heterostructures: A Case of Enhanced Interlayer Coupling Controlled by the Interface

Author(s) -

F. Y. Bruno,

Javier GarcíaBarriocanal,

M. Varela,

N. M. Nemes,

P. Thakur,

J. C. Cezar,

N. B. Brookes,

A. Rivera,

M. GarcíaHernández,

C. León,

Satoshi Okamoto,

Stephen J. Pennycook,

J. Santamarı́a

Publication year - 2011

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.106.147205

Subject(s) - superexchange , materials science , magnetic moment , magnetic circular dichroism , condensed matter physics , nuclear magnetic resonance , physics , ferromagnetism , spectral line , astronomy

et al.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. © 2011 American Physical Society.Work at UCM was supported by Spanish MICINN Grant No. MAT 2008 06517, Consolider Ingenio CSD2009-00013 (IMAGINE), and CAM S2009-MAT 1756 (PHAMA). Work at ORNL was supported by the Materials Sciences and Engineering Division, Office of Basic Energy Sciences, U.S. Department of Energy. M.V. acknowledges ERC starting Grant No. 239739 STEMOX.Peer Reviewe

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