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

L. Y. Kraya; R. Kraya

doi:10.1063/1.3675160

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

L. Y. Kraya, R. Kraya

School of Medicine

Research output: Contribution to journal › Article › peer-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 language	English (US)
Article number	013708
Journal	Journal of Applied Physics
Volume	111
Issue number	1
DOIs	https://doi.org/10.1063/1.3675160
State	Published - Jan 1 2012

ASJC Scopus subject areas

Physics and Astronomy(all)

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