Charge transfer in heterostructures of strongly correlated materials

Abstract

In this manuscript, recent theoretical investigations by the authors in the area of oxide multilayers are briefly reviewed. The calculations were carried out using model Hamiltonians and a variety of non-perturbative techniques. Moreover, new results are also included here. They correspond to the generation of a metallic state by mixing insulators in a multilayer geometry, using the Hubbard and Double Exchange models. For the latter, the resulting metallic state is also ferromagnetic. This illustrates how electron or hole doping via transfer of charge in multilayers can lead to the study of phase diagrams of transition metal oxides in the clean limit. Currently, these phase diagrams are much affected by the disordering standard chemical doping procedure, which introduces quenched disorder in the material.

14 pages, 9 figures. Invited article for a special issue of JPCM on Metal Oxide Thin Films; minor changes in the text

References in corpus (15)

• Colossal Magnetoresistant Materials: The Key Role of Phase Separation
• Complexity in Strongly Correlated Electronic Systems
• Why Some Interfaces Cannot be Sharp
• Lattice relaxation, electronic screening, and spin and orbital phase diagram of LaTiO${}_3$/SrTiO${}_3$ superlattices
• Surface metal-insulator transition in the Hubbard model
• Interfaces of correlated electron systems: Proposed mechanism for colossal electroresistance
• Spatial inhomogeneity and strong correlation physics: a dynamical mean field study of a model Mott-insulator/band-insulator heterostructure
• Electron Doping of Cuprates via Interfaces with Manganites
• Metallic surface of a Mott insulator - Mott insulating surface of a metal
• Photoemission from buried interfaces in SrTiO3/LaTiO3 superlattices
• Superconducting Puddles and "Colossal'' Effects in Underdoped Cuprates
• Theory of Mott insulator/band insulator heterostructure
• Metallic interface at the boundary between band and Mott insulators
• The One-Particle Spectral Function and the Local Density of States in a Phenomenological Mixed-Phase Model for High-Temperature Superconductors
• Correlation and surface effects in Vanadium Oxides

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• Band alignment and charge transfer in complex oxide interfaces
• Metal-insulator transition in $(LaMn{O}_3{)}_{2n}/(SrMn{O}_3{)}_n$ superlattices
• Electronic and Magnetic Properties of ${\mathrm{RMnO}}_3/{\mathrm{AMnO}}_3$ Heterostructures
• Embedding approach for dynamical mean field theory of strongly correlated heterostructures
• Electron gas at the interface between two antiferromagnetic insulating manganites
• Interface controlled electronic variations in correlated heterostructures
• Band-Engineered LaFeO${}_3$-LaNiO${}_3$ Thin Film Interfaces for Electrocatalysis of Water
• Interfacial and thickness effects in La${}_{2/3}$Sr${}_{1/3}$MnO${}_3$/YBa${}_2$Cu${}_3$O${}_7$ superlattices