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Título

Enhanced conduction and ferromagnetic order at (100)-type twin walls in La0.7 Sr0.3MnO3 thin films

AutorBalcells, Lluis; Paradinas, Markos; Bagués, Núria; Domingo, Neus ; Moreno, Roberto ; Galcerán, Regina; Walls, Michael; Santiso, José ; Konstantinović, Z.; Pomar, Alberto; Casanove, Marie-Jo; Ocal, Carmen; Martínez, Benjamín; Sandiumenge, Felip
Fecha de publicación2015
EditorAmerican Physical Society
CitaciónPhysical Review B 92(7): 075111 (2015)
ResumenThere is increasing evidence supporting the strong potential of twin walls in ferroic materials as distinct, spatially tunable, functional elements in future electronic devices. Here, we report an increase of about one order of magnitude in conductivity and more robust magnetic interactions at (100)-type twin walls in La0.7Sr0.3MnO3 thin films. The nature and microscopic origin of such distinctive behavior is investigated by combining conductive, magnetic, and force modulation scanning force microscopies with transmission electron microscopy techniques. Our analyses indicate that the observed behavior is due to a severe compressive strained state within an ∼1nm slab of material centered at the twin walls, promoting stronger Mn 3d-O2p orbital overlapping leading to a broader bandwidth and enhanced magnetic interactions.
DescripciónUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).
Versión del editorhttp://dx.doi.org/10.1103/PhysRevB.92.075111
URIhttp://hdl.handle.net/10261/127276
DOI10.1103/PhysRevB.92.075111
Identificadoresdoi: 10.1103/PhysRevB.92.075111
issn: 1098-0121
e-issn: 1550-235X
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