Direct Observation of Charge Transfer at a MgO(111) Surface

A. Subramanian*, L. D. Marks, O. Warschkow, D. E. Ellis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Transmission electron diffraction (TED) combined with direct methods have been used to study the [Formula presented] reconstruction on the polar (111) surface of MgO and refine the valence charge distribution. The surface is nonstoichiometric and is terminated by a single magnesium atom. A charge-compensating electron hole is localized in the next oxygen layer and there is a nominal charge transfer from the oxygen atoms to the top magnesium atom. The partial charges that we obtain for the surface atoms are in reasonable agreement with empirical bond-valence estimations.

Original languageEnglish (US)
Pages (from-to)4
Number of pages1
JournalPhysical review letters
Issue number2
StatePublished - 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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