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Structural and Electronic Reconstructions at the LaAlO3/SrTiO3 Interface

By M. Salluzzo, S. Gariglio, X. Torrelles, Zoran Ristić, R. Di Capua, J. Drnec, M. Moretti Sala, G. Ghiringhelli, R. Felici and N. B. Brookes


A full understanding of the mechanism of the formation of a two-dimensional electron gas (2DEG) at the interface between insulating LaAlO3 (LAO) thin films and bulk SrTiO3 (STO) crystals is a prerequisite for the full exploitation of this class of materials. Here, by using a combination of advanced X-ray synchrotron-based spectroscopic and structural measurements, it is shown that a structural and electronic reconstruction of the interface occurs before the realization of the 2DEG

Topics: polar oxide interfaces, LAO, STO, two-dimensional electron gas (2DEG), X-ray absorption spectroscopy, surface diffraction
Year: 2013
DOI identifier: 10.1002/adma.201204555
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