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Locally enhanced conductivity due to the tetragonal domain structure in LaAlO/SrTiO heterointerfaces
Beena Kalisky, Eric M. Spanton, Hilary Noad +14
The ability to control materials properties through interface engineering is demonstrated by the appearance of conductivity at the interface of certain insulators, most famously th…
LaAlO3 stoichiometry found key to electron liquid formation at LaAlO3/SrTiO3 interfaces
M. P. Warusawithana, C. Richter, J. A. Mundy +17
Emergent phenomena, including superconductivity and magnetism, found in the two-dimensional electron liquid (2-DEL) at the interface between the insulators LaAlO3 and SrTiO3 distin…
Electric-field-induced pyroelectric order and localization of the confined electrons in LaAlO3/SrTiO3 heterostructures
M. Rössle, K. W. Kim, A. Dubroka +13
With infrared ellipsometry, x-ray diffraction, and electric transport measurements we investigated the electric-field-effect on the confined electrons at the LaAlO3/SrTiO3 interfac…
Field-Effect Devices Utilizing LaAlO-SrTiO Interfaces
B. Förg, C. Richter, J. Mannhart
Using LaAlO-SrTiO bilayers, we have fabricated field-effect devices that utilize the two-dimensional electron liquid generated at the bilayers' {\textit n}-type interfaces…
Coexistence of Magnetic Order and Two-dimensional Superconductivity at LaAlO/SrTiO Interfaces
Lu Li, C. Richter, J. Mannhart +1
A two dimensional electronic system with novel electronic properties forms at the interface between the insulators LaAlO and SrTiO. Samples fabricated until now have been f…
Metal-Insulator Transition of the LaAlO3-SrTiO3 Interface Electron System
Y. C. Liao, T. Kopp, C. Richter +2
We report on a metal-insulator transition in the LaAlO3-SrTiO3 interface electron system, of which the carrier density is tuned by an electric gate field. Below a critical carrier…
Diodes with Breakdown Voltages Enhanced by the Metal-Insulator Transition of LaAlO-SrTiO Interfaces
R. Jany, M. Breitschaft, G. Hammerl +10
Using the metal-insulator transition that takes place as a function of carrier density at the LaAlO-SrTiO interface, oxide diodes have been fabricated with room-temperature…
Two-dimensional electron liquid state at LaAlO3-SrTiO3 interfaces
M. Breitschaft, V. Tinkl, N. Pavlenko +8
Using tunneling spectroscopy we have measured the spectral density of states of the mobile, two-dimensional electron system generated at the LaAlO3-SrTiO3 interface. As shown by th…
Polar catastrophe and electronic reconstructions at the LaAlO3/SrTiO3 interface: evidence from optical second harmonic generation
A. Savoia, D. Paparo, P. Perna +8
The so-called "polar catastrophe", a sudden electronic reconstruction taking place to compensate for the interfacial ionic polar discontinuity, is currently considered as a likely…
Orbital reconstruction and two-dimensional electron gas at the LaAlO3/SrTiO3 interface
M. Salluzzo, G. Ghiringhelli, J. C. Cezar +9
Conventional two-dimensional electron gases are realized by engineering the interfaces between semiconducting compounds. In 2004, Ohtomo and Hwang discovered that an electron gas c…