title: Controlled lateral anisotropy in correlated manganite heterostructures by interface-engineered oxygen octahedral coupling.
abstract: Controlled in-plane rotation of the magnetic easy axis in manganite heterostructures by tailoring the interface oxygen network could allow the development of correlated oxide-based magnetic tunnelling junctions with non-collinear magnetization, with possible practical applications as miniaturized high-switching-speed magnetic random access memory (MRAM) devices. Here, we demonstrate how to manipulate magnetic and electronic anisotropic properties in manganite heterostructures by engineering the oxygen network on the unit-cell level. The strong oxygen octahedral coupling is found to transfer the octahedral rotation, present in the NdGaO3 (NGO) substrate, to the La2/3Sr1/3MnO3 (LSMO) film in the interface region. This causes an unexpected realignment of the magnetic easy axis along the short axis of the LSMO unit cell as well as the presence of a giant anisotropic transport in these ultrathin LSMO films. As a result we possess control of the lateral magnetic and electronic anisotropies by atomic-scale design of the oxygen octahedral rotation.
authors.affiliation: MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands.
authors.forename: Z
authors.initials: Z
authors.lastname: Liao
authors.affiliation: MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands.
authors.forename: M
authors.initials: M
authors.lastname: Huijben
authors.affiliation: Institute of Solid State Physics, Vienna University of Technology, A-1040 Vienna, Austria.
authors.forename: Z
authors.initials: Z
authors.lastname: Zhong
authors.affiliation: Electron Microscopy for Materials Science (EMAT), University of Antwerp, 2020 Antwerp, Belgium.
authors.forename: N
authors.initials: N
authors.lastname: Gauquelin
authors.affiliation: Quantum Matter Institute and Department of Physics and Astronomy, University of British Columbia, 2355 East Mall, Vancouver, British Columbia V6T 1Z4, Canada.|Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Macke
authors.affiliation: Quantum Matter Institute and Department of Physics and Astronomy, University of British Columbia, 2355 East Mall, Vancouver, British Columbia V6T 1Z4, Canada.|Max Planck Institute for Chemical Physics of Solids, Nöthnitzerstraße 40, 01187 Dresden, Germany.
authors.forename: R J
authors.initials: RJ
authors.lastname: Green
authors.affiliation: Electron Microscopy for Materials Science (EMAT), University of Antwerp, 2020 Antwerp, Belgium.
authors.forename: S
authors.initials: S
authors.lastname: Van Aert
authors.affiliation: Electron Microscopy for Materials Science (EMAT), University of Antwerp, 2020 Antwerp, Belgium.
authors.forename: J
authors.initials: J
authors.lastname: Verbeeck
authors.affiliation: Electron Microscopy for Materials Science (EMAT), University of Antwerp, 2020 Antwerp, Belgium.
authors.forename: G
authors.initials: G
authors.lastname: Van Tendeloo
authors.affiliation: Institute of Solid State Physics, Vienna University of Technology, A-1040 Vienna, Austria.
authors.forename: K
authors.initials: K
authors.lastname: Held
authors.affiliation: Quantum Matter Institute and Department of Physics and Astronomy, University of British Columbia, 2355 East Mall, Vancouver, British Columbia V6T 1Z4, Canada.
authors.forename: G A
authors.initials: GA
authors.lastname: Sawatzky
authors.affiliation: MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands.
authors.forename: G
authors.identifier: http://orcid.org/0000-0001-5478-7329
authors.initials: G
authors.lastname: Koster
authors.affiliation: MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands.
authors.forename: G
authors.initials: G
authors.lastname: Rijnders
mesh_terms: D016880:Anisotropy; D016247:Information Storage and Retrieval; D017895:Manganese Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D012399:Rotation
chemical_list: D017895:Manganese Compounds; C494384:manganite; D010100:Oxygen