Preventing the reconstruction of the polar discontinuity at oxide heterointerfaces

Abstract

Perovskite oxide heteroepitaxy receives much attention because of the possibility to com- bine the diverse functionalities of perovskite oxide building blocks. A general boundary con- dition for the epitaxy is the presence of polar discontinuities at heterointerfaces. These polar discontinuities result in reconstructions, often creating new functionalities at the interface. However, for a significant number of materials these reconstructions are unwanted as they alter the intrinsic materials properties at the interface. Therefore, a strategy to eliminate this reconstruction of the polar discontinuity at the interfaces is required. We show that the use of compositional interface engineering can prevent the reconstruction at the La0.67Sr0.33MnO3/SrTiO3 (LSMO/STO) interface. The polar discontinuity at this interface can be removed by the insertion of a single La0.33Sr0.67O layer, resulting in improved interface magnetization and electrical conductivity.

Advanced Functional Materials, online march 2012

References in corpus (4)

• Critical thickness and orbital ordering in ultrathin La0.7Sr0.3MnO3 films
• Evidence of orbital reconstruction at interfaces in La0.67Sr0.33MnO3 films
• Termination Control of the Interface Dipole in La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$/Nb:SrTiO${}_3$ (001) Schottky Junctions
• Ferrodistortive instability at the (001) surface of half-metallic manganites

Cited by in corpus (6)

• Thickness dependence of dynamic and static magnetic properties of pulsed laser deposited La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$ films on SrTiO${}_3$(001)
• Enhancing interfacial magnetization with a ferroelectric
• Effect of strain on magnetic and orbital ordering of LaSrCrO${}_3$/LaSrMnO${}_3$ heterostructures
• Magnetoelectric phase control at domain-wall-like epitaxial oxide multilayers
• Temperature dependent spin dynamics in La${}_{0.67}$Sr${}_{0.33}$MnO${}_3$/Pt bilayers
• Single monolayer ferromagnetic perovskite SrRuO3 with high conductivity and strong ferromagnetism