Charge transfer in iridate-manganite superlattices

Abstract

Charge transfer in superlattices consisting of SrIrO${}_3$ and SrMnO${}_3$ is investigated using density functional theory. Despite the nearly identical work function and non-polar interfaces between SrIrO${}_3$ and SrMnO${}_3$, rather large charge transfer was experimentally reported at the interface between them. Here, we report a microscopic model that captures the mechanism behind this phenomenon, providing a qualitative understanding of the experimental observation. This leads to unique strain dependence of such charge transfer in iridate-manganite superlattices. The predicted behavior is consistently verified by experiment with soft x-ray and optical spectroscopy. Our work thus demonstrates a new route to control electronic states in non-polar oxide heterostructures.

6 pages, 5 figures

References in corpus (6)

• Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
• Interface-driven topological Hall effect in SrRuO${}_3$-SrIrO${}_3$ bilayer
• Twisted Hubbard Model for Sr2IrO4: Magnetism and Possible High Temperature Superconductivity
• Hybridization-controlled charge transfer and induced magnetism at correlated oxide interfaces
• Emerging magnetism and anomalous Hall effect in iridate-manganite heterostructures
• Fabrication of (111)-oriented Ca0.5Sr0.5IrO3/SrTiO3 superlattices; a designed playground for honeycomb physics

Cited by in corpus (3)

• Synthesis and electronic properties of Ruddlesden-Popper strontium iridate epitaxial thin films stabilized by control of growth kinetics
• Interfacial-hybridization-modified Ir Ferromagnetism and Electronic Structure in LaMnO${}_3$/SrIrO${}_3$ Superlattices
• Electric field tuning of the anomalous Hall effect at oxide interfaces