Prediction of a spin-polarized two-dimensional electron gas at the LaAlO3/EuO(001) interface

Abstract

First-principles calculations predict the existence of a spin-polarized two-dimensional electron gas (2DEG) at the LaO/EuO interface in a LaAlO3/EuO (001) heterostructure. This polar interface favors electron doping into the Eu-5d conduction bands resulting in a 2DEG formed at the interface. Due to the exchange splitting of the Eu-5d states the 2DEG is spin-polarized below the Curie temperature of EuO. The predicted mechanism for the formation of a spinpolarized 2DEG at the interface between polar and ferromagnetic insulators may provide a robust magnetism of the 2DEG which is interesting for spintronics applications.

References in corpus (7)

• Magnetic effects at the interface between nonmagnetic oxides
• High Mobility in LaAlO3/SrTiO3 Heterostructures: Origin, Dimensionality and Perspectives
• Origin of charge density at LaAlO3-on-SrTiO3 hetero-interfaces; possibility of intrinsic doping
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• Polar Discontinuity Doping of the LaVO_3/SrTiO_3 Interface
• Origin of Metallic States at Heterointerface between Band Insulators LaAlO${}_3$ and SrTiO${}_3$
• Combining DFT and Many-Body Methods to Understand Correlated Materials

Cited by in corpus (12)

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• Fabrication of high-temperature quasi-two-dimensional superconductors at the interface of a ferroelectric Ba${}_{0.8}$Sr${}_{0.2}$TiO${}_3$ film and an insulating parent compound of La${}_2$CuO${}_4$
• Thickness-dependent magnetic properties of oxygen-deficient EuO
• Spatially homogeneous ferromagnetism below the enhanced Curie temperature in EuO_{1-x} thin films
• Metallic Conductance at the Interface of Tri-color Titanate Superlattices
• Ferroelectricity driven magnetism at domain walls in LaAlO${}_3$/PbTiO${}_3$ superlattices
• Temperature dependence of the electronic structure and Fermi-surface reconstruction of Eu(1-x)Gd(x)O through the ferromagnetic metal-insulator transition
• Large anomalous Nernst coefficient in an oxide Skyrmion crystal Chern insulator
• Ferroelectric control of spin-polarized two-dimensional electron gas
• Oxide tunnel junctions supporting a two-dimensional electron gas
• Toward High Temperature Quasi-two-dimensional Superconductivity