Resonant soft x-ray scattering studies of interface reconstructions in SrTiO3/LaAlO3 superlattices.

Authors :: Wadati, H.
Hawthorn, D. G.
Geck, J.
Higuchi, T.
Hikita, Y.
Hwang, H. Y.
Kourkoutis, L. Fitting
Muller, D. A.
Huang, S.-W.
Huang, D. J.
Lin, H.-J.
Schüßler-Langeheine, C.
Wu, H.-H.
Schierle, E.
Weschke, E.
Ingle, N. J. C.
Sawatzky, G. A.
Source :: Journal of Applied Physics; Oct2009, Vol. 106 Issue 8, p083705-083710, 5p, 5 Graphs
Publication Year :: 2009
Abstract: We present resonant soft x-ray scattering studies of Ti 3d and O 2p states at the interfaces of SrTiO<subscript>3</subscript>/LaAlO<subscript>3</subscript> superlattices. From reflectivity analyses, focusing on the (003) peak which is forbidden for our “ideal” superlattice structure, we concluded that the LaO|TiO<subscript>2</subscript>/SrO and the SrO|AlO<subscript>2</subscript>/LaO interfaces have distinct reconstructions, breaking the heterostructure symmetry. [ABSTRACT FROM AUTHOR]

Subjects :: PHYSICS research
SCATTERING (Physics)
INTERFACES (Physical sciences)
SURFACES (Physics)
SUPERLATTICES
REFLECTANCE
HETEROSTRUCTURES
CRYSTALS

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