Surface spectroscopy studies of the SrTiO3 (100) surface and the platinum-SrTiO3 (100) interface

Yip-Wah Chung*, W. B. Weissbard

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

84 Scopus citations

Abstract

Auger-electron spectroscopy (AES), low-energy-electron diffraction (LEED), electron-energy-loss spectroscopy (ELS), and ultraviolet-photoelectron spectroscopy (UPS) were used to characterize the composition, structure, and electronic properties of the strontium-titanate (100) surface and the platinum strontium-titanate interface. The strontium 65-eV Auger signal on the clean strontium-titanate surface decreases abruptly as the temperature is raised beyond 240°C. Partial ordering occurs when platinum is deposited on the strontium-titanate (100) surface as evidenced by LEED. Platinum appears to remove surface Ti3+ by electron transfer from SrTiO3 to platinum. These results are discussed in light of the findings in photoelectrolysis and other photocatalytic studies using SrTiO3.

Original languageEnglish (US)
Pages (from-to)3456-3461
Number of pages6
JournalPhysical Review B
Volume20
Issue number8
DOIs
StatePublished - Jan 1 1979

ASJC Scopus subject areas

  • Condensed Matter Physics

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