The structure and chemistry of the TiO2-rich surface of SrTiO3 (001)

Natasha Erdman, Kenneth R. Poeppelmeier, Mark Asta, Oliver Warschkow, Donald E. Ellis, Laurence D. Marks*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

303 Scopus citations


Oxide surfaces are important for applications in catalysis and thin film growth. An important frontier in solid-state inorganic chemistry is the prediction of the surface structure of an oxide. Comparatively little is known about atomic arrangements at oxide surfaces at present, and there has been considerable discussion concerning the forces that control such arrangements. For instance, one model suggests that the dominant factor is a reduction of Coulomb forces1; another favours minimization of 'dangling bonds' by charge transfer to states below the Fermi energy2. The surface structure and properties of SrTiO3-a standard model for oxides with a perovskite structure-have been studied extensively3-14. Here we report a solution of the 2 x 1 SrTiO3 (001) surface structure obtained through a combination of high-resolution electron microscopy and theoretical direct methods. Our results indicate that surface rearrangement of TiO6-x units into edge-sharing blocks determines the SrO-deficient surface structure of SrTiO3. We suggest that this structural concept can be extended to perovskite surfaces in general.

Original languageEnglish (US)
Pages (from-to)55-58
Number of pages4
Issue number6902
StatePublished - Sep 5 2002

ASJC Scopus subject areas

  • General


Dive into the research topics of 'The structure and chemistry of the TiO2-rich surface of SrTiO3 (001)'. Together they form a unique fingerprint.

Cite this