Research Update: Conductivity and beyond at the LaAlO3/SrTiO3 interface
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In this paper, the authors focus on the celebrated interface between two band insulators, LaAlO3 and SrTiO3, that was found to be conducting, superconducting, and to display a strong spin-orbit coupling.Abstract:
In this review, we focus on the celebrated interface between two band insulators, LaAlO3 and SrTiO3, that was found to be conducting, superconducting, and to display a strong spin-orbit coupling. We discuss the formation of the 2-dimensional electron liquid at this interface, the particular electronic structure linked to the carrier confinement, the transport properties, and the signatures of magnetism. We then highlight distinctive characteristics of the superconducting regime, such as the electric field effect control of the carrier density, the unique tunability observed in this system, and the role of the electronic subband structure. Finally we compare the behavior of Tc versus 2D doping with the dome-like behavior of the 3D bulk superconductivity observed in doped SrTiO3. This comparison reveals surprising differences when the Tc behavior is analyzed in terms of the 3D carrier density for the interface and the bulk.read more
Citations
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Journal Article
Nanoscale Control of an Interfacial Metal-Insulator Transition at Room Temperature
Cheng Cen,Jeremy Levy,Stefan Thiel,German Hammerl,Christof W. Schneider,Jochen Mannhart,Kristopher E. Anderson,C. Stephen Hellberg +7 more
TL;DR: The creation and erasure of nanoscale conducting regions at the interface between two insulating oxides, LaAlO3 and SrTiO3 are reported.
Journal Article
Oxide Nanoelectronics On Demand
TL;DR: This work demonstrates nanoscale lateral confinement of a quasi–two-dimensional electron gas at a lanthanum aluminate–strontium titanate interface and controls this confinement using an atomic force microscope lithography technique to create tunnel junctions and field-effect transistors with characteristic dimensions as small as 2 nanometers.
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Physics of SrTiO$_3$-based heterostructures and nanostructures: a review
TL;DR: This review provides a summary of the rich physics expressed within SrTiO3-based heterostructure and nanostructures, including their phase diagram and coupling between the various degrees of freedom.
Journal ArticleDOI
Physics of SrTiO3-based heterostructures and nanostructures: a review.
TL;DR: In this paper, the authors provide a summary of the rich physics expressed within SrTiO3-based heterostructures and nanostructure, including their phase diagram and coupling between the various degrees of freedom.
Journal ArticleDOI
Full superconducting dome of strong Ising protection in gated monolayer WS2
Jianming Lu,Oleksandr Zheliuk,Qihong Chen,Inge Leermakers,Nigel E. Hussey,Uli Zeitler,Jianting Ye +6 more
TL;DR: In this paper, the authors used field effect gating to induce superconductivity in monolayer WS2 grown by chemical vapor deposition, a typical ambient-stable semiconducting transition metal dichalcogenide (TMD).
References
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Journal ArticleDOI
A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface
TL;DR: A model interface is examined between two insulating perovskite oxides—LaAlO3 and SrTiO3—in which the termination layer at the interface is controlled on an atomic scale, presenting a broad opportunity to tailor low-dimensional charge states by atomically engineered oxide heteroepitaxy.
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Superconducting Interfaces Between Insulating Oxides
Nicolas Reyren,Stefan Thiel,Andrea D. Caviglia,L. Fitting Kourkoutis,German Hammerl,Christoph Richter,Christof W. Schneider,Thilo Kopp,Anna-Sabina Ruetschi,Didier Jaccard,Marc Gabay,David A. Muller,Jean-Marc Triscone,Jochen Mannhart +13 more
TL;DR: This work reports on superconductivity in the electron gas formed at the interface between two insulating dielectric perovskite oxides, LaAlO3 and SrTiO3.
Book
Spin-orbit Coupling Effects in Two-Dimensional Electron and Hole Systems
TL;DR: The Extended Kane Model has been used to model the band structure of Semiconductors as mentioned in this paper, and it has been shown that the Extended Kane model can be used to explain spin-orbit coupling effects.
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Emergent phenomena at oxide interfaces
TL;DR: Recent technical advances in the atomic-scale synthesis of oxide heterostructures have provided a fertile new ground for creating novel states at their interfaces, with characteristic feature is the reconstruction of the charge, spin and orbital states at interfaces on the nanometre scale.
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Tunable Quasi-Two-Dimensional Electron Gases in Oxide Heterostructures
TL;DR: A large electric-field response of quasi–two-dimensional electron gases generated at interfaces in epitaxial heterostructures grown from insulating oxides is reported, indicating that the conductivity of the electron gases can be modulated through a quantum phase transition from an insulating to a metallic state.