Interfacial Control of Magnetic Properties at LaMnO3/LaNiO3 heterostructures

Sketch of the different stacking configuration of the bilayers and the corresponding total magnetization measured. Reprinted with permission from Nano Lett., 15 (11), pp 7355–7361 (2015) . Copyright 2015 American Chemical Society
Sketch of the different stacking configuration of the bilayers and the corresponding total magnetization measured. Reprinted with permission from Nano Lett., 15 (11), pp 7355–7361 (2015) . Copyright 2015 American Chemical Society

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 LaMnO3/LaNiO3 heterostructures, which display an intrinsic interface structural asymmetry depending on the growth sequence. Using a X-ray magnetic circular dichroism measured at the X-Treme beamline, SLS, in conjunction with X-ray reflectivity measured at the SEXTANTS beamline, SOLEIL, 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 LaMnO3 thin films dramatically depends on interface reconstructions.

Contact
Prof. Dr. Marta Gibert
Oxide interface physics group
Physics Institute
University of Zurich
E-mail: gibert@physik.uzh.ch
Original Publication
Interfacial Control of Magnetic Properties at LaMnO3/LaNiO3 Interfaces
M. Gibert, M. Viret, A. Torres-Pardo, C. Piamonteze, P. Zubko, N. Jaouen, J.-M. Tonnerre, A. Mougin, J. Fowlie, S. Catalano, A. Gloter, O. Stéphan, and J.-M. Triscone
Nano Lett., 15 (11), pp 7355–7361 (2015)
DOI: 10.1021/acs.nanolett.5b02720