Structural and Electronic Reconstructions at the LaAlO3/SrTiO3 Interface
Di Capua, R.
Sala, M. Moretti
Brookes, N. B.
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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.
Keywords:polar oxide interfaces / LAO / STO / two-dimensional electron gas (2DEG) / X-ray absorption spectroscopy / surface diffraction
Source:Advanced Materials, 2013, 25, 16, 2333-2338
- MAMA - Unlocking research potential for multifunctional advanced materials and nanoscale phenomena (EU-264098)
- Spanish MICINN Agency [CSD2007-00041, MAT2009-09308]