Electronic and Magnetic Reconstructions in La0.7Sr0.3MnO3/SrTiO3 Heterostructures: A Case of Enhanced Interlayer Coupling Controlled by the Interface

被引：83

作者：

Bruno, F. Y. ^{[1
]}

Garcia-Barriocanal, J. ^{[1
,2
]}

Varela, M. ^{[3
]}

Nemes, N. M. ^{[1
]}

Thakur, P.

Cezar, J. C.

Brookes, N. B.

Rivera-Calzada, A. ^{[1
]}

Garcia-Hernandez, M. ^{[4
]}

Leon, C. ^{[1
]}

Okamoto, S. ^{[3
]}

Pennycook, S. J. ^{[3
]}

Santamaria, J. ^{[1
]}

机构：

[1] Univ Complutense Madrid, GFMC, Dept Fis Aplicada 3, E-28040 Madrid, Spain

[2] European Synchrotron Radiat Facil, SpLine Spanish CRG Beamline, F-38043 Grenoble, France

[3] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[4] Consejo Super Invest Cient, Inst Ciencia Mat Madrid, Canto Blanco 28049, Spain

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 14期

关键词：

OXIDES;

D O I：

10.1103/PhysRevLett.106.147205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：4

共 25 条

[1] Nearly total spin polarization in La2/3Sr1/3MnO3 from tunneling experiments [J].

Bowen, M ;

Bibes, M ;

Barthélémy, A ;

Contour, JP ;

Anane, A ;

Lemaitre, Y ;

Fert, A .

APPLIED PHYSICS LETTERS, 2003, 82 (02) :233-235

[2] Orbital reconstruction and covalent bonding at an oxide interface [J].

Chakhalian, J. ;

Freeland, J. W. ;

Habermeier, H.-U. ;

Cristiani, G. ;

Khaliullin, G. ;

van Veenendaal, M. ;

Keimer, B. .

SCIENCE, 2007, 318 (5853) :1114-1117

[3] Magnetism at the interface between ferromagnetic and superconducting oxides [J].

Chakhalian, J ;

Freeland, JW ;

Srajer, G ;

Strempfer, J ;

Khaliullin, G ;

Cezar, JC ;

Charlton, T ;

Dalgliesh, R ;

Bernhard, C ;

Cristiani, G ;

Habermeier, HU ;

Keimer, B .

NATURE PHYSICS, 2006, 2 (04) :244-248

[4] EXPERIMENTAL CONFIRMATION OF THE X-RAY MAGNETIC CIRCULAR-DICHROISM SUM-RULES FOR IRON AND COBALT [J].

CHEN, CT ;

IDZERDA, YU ;

LIN, HJ ;

SMITH, NV ;

MEIGS, G ;

CHABAN, E ;

HO, GH ;

PELLEGRIN, E ;

SETTE, F .

PHYSICAL REVIEW LETTERS, 1995, 75 (01) :152-155

[5] Temperature dependence of the interfacial spin polarization of La2/3Sr1/3MnO3 -: art. no. 052403 [J].

Garcia, V ;

Bibes, M ;

Barthélémy, A ;

Bowen, M ;

Jacquet, E ;

Contour, JP ;

Fert, A .

PHYSICAL REVIEW B, 2004, 69 (05)

[6] Spin and orbital Ti magnetism at LaMnO3/SrTiO3 interfaces [J].

Garcia-Barriocanal, J. ;

Cezar, J. C. ;

Bruno, F. Y. ;

Thakur, P. ;

Brookes, N. B. ;

Utfeld, C. ;

Rivera-Calzada, A. ;

Giblin, S. R. ;

Taylor, J. W. ;

Duffy, J. A. ;

Dugdale, S. B. ;

Nakamura, T. ;

Kodama, K. ;

Leon, C. ;

Okamoto, S. ;

Santamaria, J. .

NATURE COMMUNICATIONS, 2010, 1

[7] "Charge Leakage" at LaMnO3/SrTiO3 Interfaces [J].

Garcia-Barriocanal, Javier ;

Bruno, Flavio Y. ;

Rivera-Calzada, Alberto ;

Sefrioui, Zouhair ;

Nemes, Norbert M. ;

Garcia-Hernandez, Mar ;

Rubio-Zuazo, Juan ;

Castro, German R. ;

Varela, Maria ;

Pennycook, Stephen J. ;

Leon, Carlos ;

Santamaria, Jacobo .

ADVANCED MATERIALS, 2010, 22 (05) :627-+

[8] THEORY OF THE ROLE OF COVALENCE IN THE PEROVSKITE-TYPE MANGANITES [LA,M(II)]MNO3 [J].

GOODENOUGH, JB .

PHYSICAL REVIEW, 1955, 100 (02) :564-573

[9] Co-doped (La,Sr)TiO3-δ:: A high curie temperature diluted magnetic system with large spin polarization -: art. no. 027207 [J].

Herranz, G ;

Ranchal, R ;

Bibes, M ;

Jaffrès, H ;

Jacquet, E ;

Maurice, JL ;

Bouzehouane, K ;

Wyczisk, F ;

Tafra, E ;

Basletic, M ;

Hamzic, A ;

Colliex, C ;

Contour, JP ;

Barthélémy, A ;

Fert, A .

PHYSICAL REVIEW LETTERS, 2006, 96 (02)

[10] Insulator-metal transition induced by interlayer coupling in La0.6Sr0.4MnO3/SrTiO3 superlattices -: art. no. 064429 [J].

Izumi, M ;

Ogimoto, Y ;

Okimoto, Y ;

Manako, T ;

Ahmet, P ;

Nakajima, K ;

Chikyow, T ;

Kawasaki, M ;

Tokura, Y .

PHYSICAL REVIEW B, 2001, 64 (06) :644291-644296

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