Independent Control of the Magnetization in Ferromagnetic La2/3Sr1/3MnO3/SrTiO3/LaCoO3 Heterostructures Achieved by Epitaxial Lattice Mismatch

Rivas-Murias, B. ; Lucas, I. (Universidad de Zaragoza) ; Jiménez-Cavero, P. (Universidad de Zaragoza) ; Magén, C. (Universidad de Zaragoza) ; Morellón, L. (Universidad de Zaragoza) ; Rivadulla, F.

Resumen: We report the effect of interface symmetry-mismatch on the magnetic properties of LaCoO3 (LCO) thin films. Growing epitaxial LCO under tensile strain on top of cubic SrTiO3 (STO) produces a contraction along the c axis and a characteristic ferromagnetic response. However, we report here that ferromagnetism in LCO is completely suppressed when grown on top of a buffer layer of rhombohedral La2/3Sr1/3MnO3 (LSMO), in spite of identical in-plane and out-of-plane lattice deformation. This confirms that it is the lattice symmetry mismatch and not just the total strain, which determines the magnetism of LCO. On the basis of this control over the magnetic properties of LCO, we designed a multilayered structure to achieve independent rotation of the magnetization in ferromagnetic insulating LCO and half-metallic ferromagnet LSMO. This is an important step forward for the design of spin-filtering tunnel barriers based on LCO.

Idioma: Inglés

DOI: 10.1021/acs.nanolett.5b04657

Año: 2016

Publicado en: Nano Letters 16, 3 (2016), 1736-1740
ISSN: 1530-6984

Factor impacto JCR: 12.712 (2016)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 11 / 164 = 0.067 (2016) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 5 / 85 = 0.059 (2016) - Q1 - T1
Categ. JCR: PHYSICS, CONDENSED MATTER rank: 7 / 67 = 0.104 (2016) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 11 / 273 = 0.04 (2016) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 7 / 147 = 0.048 (2016) - Q1 - T1
Categ. JCR: CHEMISTRY, PHYSICAL rank: 7 / 144 = 0.049 (2016) - Q1 - T1

Factor impacto SCIMAGO: 7.892 - Bioengineering (Q1) - Chemistry (miscellaneous) (Q1) - Nanoscience and Nanotechnology (Q1) - Materials Science (miscellaneous) (Q1) - Mechanical Engineering (Q1) - Condensed Matter Physics (Q1)

Financiación: info:eu-repo/grantAgreement/EC/FP7/312483/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM 2
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2014-51982-C2-2-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2013–44673-R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)