Evolution of the interfacial structure of LaAlO3 on SrTiO3

Details Evolution of the interfacial structure of LaAlO3 on SrTiO3 Evolution of the interfacial structure of LaAlO3 on SrTiO3

2010-09-10

arxiv.org/abs/1009.2006v1

Physics

Condensed Matter

Materials Science

Scientific paper

The evolution of the atomic structure of LaAlO3 grown on SrTiO3 was investigated using surface x-ray diffraction in conjunction with model-independent, phase-retrieval algorithms between two and five monolayers film thickness. A depolarizing buckling is observed between cation and oxygen positions in response to the electric field of polar LaAlO3, which decreases with increasing film thickness. We explain this in terms of competition between elastic strain energy, electrostatic energy, and electronic reconstructions. The findings are qualitatively reproduced by density-functional theory calculations. Significant cationic intermixing across the interface extends approximately three monolayers for all film thicknesses. The interfaces of films thinner than four monolayers therefore extend to the surface, which might affect conductivity.

Affiliated with

Also associated with

No associations

Rating

Evolution of the interfacial structure of LaAlO3 on SrTiO3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evolution of the interfacial structure of LaAlO3 on SrTiO3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of the interfacial structure of LaAlO3 on SrTiO3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-672505