Hidden Interface Driven Exchange Coupling in Oxide Heterostructures

被引：42

作者：

Chen, Aiping ^{[1
]}

Wang, Qiang ^{[2
,3
]}

Fitzsimmons, Michael R. ^{[4
,5
]}

Enriquez, Erik ^{[1
]}

Weigand, Marcus ^{[1
]}

Harrell, Zach ^{[1
]}

McFarland, Brian ^{[1
]}

Lu, Xujie ^{[1
]}

Dowden, Paul ^{[1
]}

MacManus-Driscoll, Judith L. ^{[6
]}

Yarotski, Dmitry ^{[1
]}

Jia, Quanxi ^{[1
,7
]}

机构：

[1] Los Alamos Natl Lab, Ctr Integrated Nanotechnol CINT, Los Alamos, NM 87545 USA

[2] Argonne Natl Lab, Mat Sci Div, Argonne, IL 60439 USA

[3] West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA

[4] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA

[5] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[6] Univ Cambridge, Dept Mat Sci, Cambridge CB3 OFS, England

[7] Univ Buffalo State Univ New York, Dept Mat Design & Innovat, Buffalo, NY 14260 USA

来源：

ADVANCED MATERIALS | 2017年 / 29卷 / 26期

基金：

英国工程与自然科学研究理事会;

关键词：

epitaxial thin films; interface; magnetism; polarized neutron reflectometry; LOW-FIELD MAGNETORESISTANCE; BIAS; NANOCOMPOSITE; STOICHIOMETRY; FERROMAGNETISM; SYSTEMS; FILMS;

D O I：

10.1002/adma.201700672

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A variety of emergent phenomena have been enabled by interface engineering in complex oxides. The existence of an intrinsic interfacial layer has often been found at oxide heterointerfaces. However, the role of such an interlayerin controlling functionalities is not fully explored. Here, we report the control of the exchange bias (EB) in single-phase manganite thin films with nominallyuniform chemical composition across the interfaces. The sign of EB depends on the magnitude of the cooling field. A pinned layer, confirmed by polarized neutron reflectometry, provides the source of unidirectional anisotropy. The origin of the exchange bias coupling is discussed in terms of magnetic interactions between the interfacial ferromagnetically reduced layer and the bulk ferromagnetic region. The sign of EB is related to the frustration of antiferromagnetic coupling between the ferromagnetic region and the pinned layer. Our results shed new light on using oxide interfaces to design functional spintronic devices.

引用

页数：7

共 57 条

[1] Exchange bias using a spin glass [J].

Ali, Mannan ;

Adie, Patrick ;

Marrows, Christopher H. ;

Greig, Denis ;

Hickey, Bryan J. ;

Stamps, Robert L. .

NATURE MATERIALS, 2007, 6 (01) :70-75

[2] Positive and negative exchange bias in IrMn/NiFe bilayers [J].

Anandakumar, S. ;

Rani, V. Sudha ;

Oh, Sunjong ;

Kim, CheolGi .

THIN SOLID FILMS, 2010, 519 (03) :1020-1024

[3] Strain induced x-ray absorption linear dichroism in La0.7Sr0.3MnO3 thin films [J].

Aruta, C ;

Ghiringhelli, G ;

Tebano, A ;

Boggio, NG ;

Brookes, NB ;

Medaglia, PG ;

Balestrino, G .

PHYSICAL REVIEW B, 2006, 73 (23)

[4] Preventing the Reconstruction of the Polar Discontinuity at Oxide Heterointerfaces [J].

Boschker, H. ;

Verbeeck, J. ;

Egoavil, R. ;

Bals, S. ;

van Tendeloo, G. ;

Huijben, M. ;

Houwman, E. P. ;

Koster, G. ;

Blank, D. H. A. ;

Rijnders, G. .

ADVANCED FUNCTIONAL MATERIALS, 2012, 22 (11) :2235-2240

[5] High-Temperature Magnetic Insulating Phase in Ultrathin La0.67Sr0.33MnO3 Films [J].

Boschker, Hans ;

Kautz, Jaap ;

Houwman, Evert P. ;

Siemons, Wolter ;

Blank, Dave H. A. ;

Huijben, Mark ;

Koster, Gertjan ;

Vailionis, Arturas ;

Rijnders, Guus .

PHYSICAL REVIEW LETTERS, 2012, 109 (15)

[6] Electronic phase separation in manganite-insulator interfaces [J].

Brey, Luis .

PHYSICAL REVIEW B, 2007, 75 (10)

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

Bruno, F. Y. ;

Garcia-Barriocanal, J. ;

Varela, M. ;

Nemes, N. M. ;

Thakur, P. ;

Cezar, J. C. ;

Brookes, N. B. ;

Rivera-Calzada, A. ;

Garcia-Hernandez, M. ;

Leon, C. ;

Okamoto, S. ;

Pennycook, S. J. ;

Santamaria, J. .

PHYSICAL REVIEW LETTERS, 2011, 106 (14)

[8] Two-Dimensional Quantum Oscillations of the Conductance at LaAlO3/SrTiO3 Interfaces [J].

Caviglia, A. D. ;

Gariglio, S. ;

Cancellieri, C. ;

Sacepe, B. ;

Fete, A. ;

Reyren, N. ;

Gabay, M. ;

Morpurgo, A. F. ;

Triscone, J-M. .

PHYSICAL REVIEW LETTERS, 2010, 105 (23)

[9] Tunable Low-Field Magnetoresistance in (La0.7Sr0.3MnO3)0.5:(ZnO)0.5 Self-Assembled Vertically Aligned Nanocomposite Thin Films [J].

Chen, Aiping ;

Bi, Zhenxing ;

Tsai, Chen-Fong ;

Lee, JoonHwan ;

Su, Qing ;

Zhang, Xinghang ;

Jia, Quanxi ;

MacManus-Driscoll, Judith L. ;

Wang, Haiyan .

ADVANCED FUNCTIONAL MATERIALS, 2011, 21 (13) :2423-2429

[10] Pinned magnetization in the antiferromagnet and ferromagnet of an exchange bias system [J].

Fitzsimmons, M. R. ;

Kirby, B. J. ;

Roy, S. ;

Li, Zhi-Pan ;

Roshchin, Igor V. ;

Sinha, S. K. ;

Schuller, Ivan K. .

PHYSICAL REVIEW B, 2007, 75 (21)

← 1 2 3 4 5 6 →