Determination of the electronic structure of ferroelectric surfaces by scanning tunneling microscopy

L. Y. Kraya, R. Kraya

Research output: Contribution to journalArticlepeer-review

Abstract

The electronic structures and the origin of the in-gap states of the BaTiO 3 (001) (2×2), (√5×√5), and (3×1) reconstructions are investigated using scanning tunneling microscopy and low energy electron diffraction. We find a shift of the in-gap states toward the valence band as the order of the reconstructions increase. We argue that Ti adatoms are responsible for the in-gap state, and a decrease in the oxidation state of the Ti adatom as a function of the reconstruction is attributed to the shift of the in-gap state within the local density of states.

Original languageEnglish (US)
Article number013708
JournalJournal of Applied Physics
Volume111
Issue number1
DOIs
StatePublished - Jan 1 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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