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.

arXiv commentAdvanced Functional Materials, online march 2012

References in corpus (9)

• Why Some Interfaces Cannot be Sharp
• Critical thickness and orbital ordering in ultrathin La0.7Sr0.3MnO3 films
• Thickness dependent magnetotransport in ultra-thin manganite films
• Evidence of orbital reconstruction at interfaces in La0.67Sr0.33MnO3 films
• Optimized fabrication of high quality La0.67Sr0.33MnO3 thin films considering all essential characteristics
• Termination Control of the Interface Dipole in La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$/Nb:SrTiO${}_3$ (001) Schottky Junctions
• Nanoscale Suppression of Magnetization at Atomically Assembled Manganite Interfaces
• Ferrodistortive instability at the (001) surface of half-metallic manganites
• Robust Ti4+ states in SrTiO3 layers of La0.6Sr0.4MnO3/SrTiO3/ La0.6Sr0.4MnO3 junctions

Cited by in corpus (17)

• Ferromagnetism and conductivity in atomically thin SrRuO3
• Thickness dependent properties in oxide heterostructures driven by structurally induced metal-oxygen hybridization variations
• The origin of the dead-layer at the La0.67Sr0.33MnO3/SrTiO3 interface and dead-layer reduction via interfacial engineering
• 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
• Efficient intrinsic spin-to-charge current conversion in an all-epitaxial single-crystal perovskite-oxide heterostructure of La0.67Sr0.33MnO3/LaAlO3/SrTiO3
• Structural Distortions At Polar Manganite Interfaces
• Confinement of magnetism in atomically-thin $L{a}_{0.7}S{r}_{0.3}Cr{O}_3$/$L{a}_{0.7}S{r}_{0.3}Mn{O}_3$ heterostructures
• Effect of strain on magnetic and orbital ordering of LaSrCrO${}_3$/LaSrMnO${}_3$ heterostructures
• Interfacial Magnetism in Complex Oxide Heterostructures Probed by Neutrons and X-rays
• Optimal interface doping at La_2/3Sr_1/3MnO_3/SrTiO_3(001) heterojunctions for spintronic applications
• Magnetoelectric phase control at domain-wall-like epitaxial oxide multilayers
• Coherently strained epitaxial YBa${}_2$Cu${}_3$O${}_{7-\delta }$ films grown on NdGaO${}_3$ (110)
• Interface-driven magnetic anisotropy in relaxed La${}_{0.7}$Sr${}_{0.3}$CrO${}_3$/La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$ heterostructures on MgO
• Interface combinatorial pulsed laser deposition to enhance heterostructures functional properties
• 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