Interfacial Control of Magnetic Properties at LaMnO3/LaNiO3 Interfaces

Marta Gibert 1, * Michel Viret 2 A. Torres-Pardo 3 C Piamonteze 4 P. Zubko 1 N. Jaouen 5 J.-M Tonnerre 6 A Mougin 3 J Fowlie 1 S. Catalano 1 A. Gloter 3 O. Stephan 3 J.-M Triscone 1
* Corresponding author
1 University of Geneva [Switzerland]
2 LNO - Laboratoire Nano-Magnétisme et Oxydes
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
3 LPS - Laboratoire de Physique des Solides
4 PSI - Paul Scherrer Institute
5 SSOLEIL - Synchrotron SOLEIL
6 SIN - Surfaces, Interfaces et Nanostructures
NEEL - Institut Néel
Abstract : The functional properties of oxide heterostructures ultimately rely on how the electronic and structural mismatches occurring at interfaces are accommodated by the chosen materials combination. We discuss here LaMnO$_3$/LaNiO$_3$ heterostructures, which display an intrinsic interface structural asymmetry depending on the growth sequence. Using a variety of synchrotron-based techniques, we show that the degree of intermixing at the monolayer scale allows interface-driven properties such as charge transfer and the induced magnetic moment in the nickelate layer to be controlled. Further, our results demonstrate that the magnetic state of strained LaMnO$_3$ thin films dramatically depends on interface reconstructions.
Keywords : manganites Interface engineering magnetism nickelates
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Marta Gibert, Michel Viret, A. Torres-Pardo, C Piamonteze, P. Zubko, et al.. Interfacial Control of Magnetic Properties at LaMnO3/LaNiO3 Interfaces. Nano Letters, American Chemical Society, 2015, 15 (11), pp.7355 - 7361. ⟨10.1021/acs.nanolett.5b02720⟩. ⟨cea-01498302⟩

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