Magnetic order and valency at La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$/SrTiO${}_3$ interfaces

Abstract

We report on first principles calculations of the electronic structure of La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$/SrTiO${}_3$ junction with two possible types of interface terminations. We find that the La${}_{0.7}$Sr${}_{0.3}$O/TiO${}_2$ interface preserves the interlayer ferromagnetic coupling between the interface MnO${}_2$ layer and the bulk. The other interface, MnO${}_2$/SrO, favours antiferromagnetic coupling with the bulk. By inserting two unit cells of undoped LaMnO${}_3$ at the interface the ferromagnetism is recovered. This is understood in terms of the doping level and the mobility of carriers near the interface.

arXiv comment4 pages, 3 figures, 3 tables

References in corpus (6)

• Nearly total spin polarization in La2/3Sr1/3MnO3 from tunneling experiments
• How to calculate the degree of spin polarization in ferromagnets?
• The origin of high transport spin polarization in La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$: direct evidence for minority spin states
• Half-Metallicity of LSMO
• Electronic and magnetic properties of the (001) surface of hole-doped manganites
• Fermi surface of the colossal magnetoresistance perovskite La_{0.7}Sr_{0.3}MnO_{3}

Cited by in corpus (8)

• Evidence of orbital reconstruction at interfaces in La0.67Sr0.33MnO3 films
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• Suppressed Magnetization at the Surfaces and Interfaces of Ferromagnetic Metallic Manganites
• Interface Ferromagnetism in (110)-Oriented La0.7Sr0.3MnO3/SrTiO3 Ultrathin Superlattices
• Probing La(0.7)Sr(0.3)MnO3 multilayers via spin wave resonances
• Gate tunable spin-orbit coupling and weak antilocalization effect in an epitaxial La${}_{2/3}$Sr${}_{1/3}$MnO${}_3$ thin film
• Optimal interface doping at La_2/3Sr_1/3MnO_3/SrTiO_3(001) heterojunctions for spintronic applications
• Spin-polarized tunneling spectroscopic studies of the intrinsic heterogeneity and pseudogap phenomena in colossal magnetoresistive manganite La_{0.7}Ca_{0.3}MnO_{3}