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Two Dimensional Electron Gas At Oxide Interfaces, Karolina Janicka
Two Dimensional Electron Gas At Oxide Interfaces, Karolina Janicka
Department of Physics and Astronomy: Dissertations, Theses, and Student Research
Extraordinary phenomena can occur at the interface between two oxide materials. A spectacular example is a formation of a two-dimensional electron gas (2DEG) at the SrTiO3/LaAlO3 interface. In this dissertation the properties of the 2DEG are investigated from first principles.
The spatial extent of the 2DEG formed at the SrTiO3/LaAlO3 n-type interface is studied. It is shown that the confinement of the 2DEG is controlled by metal induced gap states formed in the band gap of SrTiO3. The confinement width is then determined by the attenuation length of the metal induced gap …