Ferromagnetism in ultrathin surface-freeLa0.7Sr0.3MnO3layers in electrostatically defined heterostructures,Physical Review Materials

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Ferromagnetism in ultrathin surface-freeLa0.7Sr0.3MnO3layers in electrostatically defined heterostructures
Physical Review Materials ( IF 3.1 ) Pub Date : 2021-08-23 , DOI: 10.1103/physrevmaterials.5.084409
A. Galdi _{1,

2} , N. Coppola ₂ , C. Sacco ₂ , L. Maritato ₂ , P. Bencok ₃ , P. Steadman ₃ , P. Orgiani _{4,

5} , C. Aruta ₆

Affiliation

Electrostatically defined perovskite oxide heterostructures, in which carriers are confined by the modulation of the A-site ion charge, offer new possibilities of tuning the magnetic properties of manganite oxides. We investigate the preferential orientation of ferromagnetic and antiferromagnetic moments in ultrathin

{La}_{0.7} {Sr}_{0.3} {MnO}_{3}

layers embedded in antiferromagnetic

Sr {MnO}_{3}

as they undergo a metal-to-insulator transition with decreasing thickness. Our results evince the role of orbital occupation, metallicity, and competition of different magnetic phases, in absence of spurious effects occurring in thin films as a result of symmetry breaking at