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

H. Wadati; D. G. Hawthorn; J. Geck; T. Higuchi; Y. Hikita; H. Y. Hwang; L. Fitting Kourkoutis; D. A. Muller; S. W. Huang; D. J. Huang; H. J. Lin; C. Schüßler-Langeheine; H. H. Wu; E. Schierle; E. Weschke; N. J.C. Ingle; G. A. Sawatzky

doi:10.1063/1.3246788

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

Research output: Contribution to journal › Research article › Contributed › peer-review

Contributors

H. Wadati - , University of British Columbia (Author)
D. G. Hawthorn - , University of British Columbia (Author)
J. Geck - , Chair of Physics of Quantum Materials, University of British Columbia (Author)
T. Higuchi - , The University of Tokyo (Author)
Y. Hikita - , The University of Tokyo (Author)
H. Y. Hwang - , The University of Tokyo, Japan Science and Technology Agency (Author)
L. Fitting Kourkoutis - , Cornell University (Author)
D. A. Muller - , Cornell University (Author)
S. W. Huang - , National Synchrotron Radiation Research Center Taiwan (Author)
D. J. Huang - , National Synchrotron Radiation Research Center Taiwan (Author)
H. J. Lin - , National Synchrotron Radiation Research Center Taiwan (Author)
C. Schüßler-Langeheine - , University of Cologne (Author)
H. H. Wu - , National Synchrotron Radiation Research Center Taiwan, University of Cologne (Author)
E. Schierle - , Helmholtz Centre Berlin for Materials and Energy (Author)
E. Weschke - , Helmholtz Centre Berlin for Materials and Energy (Author)
N. J.C. Ingle - , University of British Columbia (Author)
G. A. Sawatzky - , University of British Columbia (Author)

Abstract

We present resonant soft x-ray scattering studies of Ti 3d and O 2p states at the interfaces of SrTiO₃ / LaAlO₃ superlattices. From reflectivity analyses, focusing on the (003) peak which is forbidden for our "ideal" superlattice structure, we concluded that the LaO∫ TiO₂ /SrO and the SrO∫ AlO₂ /LaO interfaces have distinct reconstructions, breaking the heterostructure symmetry.

Details

Original language	English
Article number	083705
Journal	Journal of applied physics
Volume	106
Issue number	8
Publication status	Published - 2009
Peer-reviewed	Yes

External IDs

ORCID	/0000-0002-2438-0672/work/159172182

Keywords

ASJC Scopus subject areas

Physics and Astronomy (all)