Atomic structure of O/Ir(2 1 0) nanofacets

Ivan Ermanoski, Changki Kim, Stephen P. Kelty, Theodore E. Madey

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A study of faceting of the O/Ir(2 1 0) surface has been conducted using scanning tunneling microscopy (STM). Three-sided nanometer-scale pyramids with {3 1 1} and (1 1 0) facets are found to cover the surface uniformly in the entire range of facet formation and growth temperatures. The {3 1 1} facets are smooth and unreconstructed. The (1 1 0) facets consist of unreconstructed terraces and restructured areas that exhibit a complex faceting pattern on the atomic level. The tilt angles of pyramid facets and distances between surface atoms for the facets and for the (1 1 0) superstructure are consistent with predictions based on truncated bulk iridium crystal properties. STM image simulations, based on electronic band structure calculations, have been used to validate the proposed surface terminations for the complex (1 1 0) facet superstructure.

Original languageEnglish (US)
Pages (from-to)89-97
Number of pages9
JournalSurface Science
Volume596
Issue number1-3
DOIs
StatePublished - Dec 10 2005
Externally publishedYes

Fingerprint

atomic structure
flat surfaces
Scanning tunneling microscopy
Iridium
pyramids
Growth temperature
scanning tunneling microscopy
Band structure
Atoms
Crystals
iridium
predictions
electronics
crystals
atoms
simulation

Keywords

  • Faceting
  • Iridium (2 1 0)
  • Oxygen
  • Scanning tunneling microscopy (STM)
  • Surface structure

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Atomic structure of O/Ir(2 1 0) nanofacets. / Ermanoski, Ivan; Kim, Changki; Kelty, Stephen P.; Madey, Theodore E.

In: Surface Science, Vol. 596, No. 1-3, 10.12.2005, p. 89-97.

Research output: Contribution to journalArticle

Ermanoski, I, Kim, C, Kelty, SP & Madey, TE 2005, 'Atomic structure of O/Ir(2 1 0) nanofacets', Surface Science, vol. 596, no. 1-3, pp. 89-97. https://doi.org/10.1016/j.susc.2005.08.024
Ermanoski, Ivan ; Kim, Changki ; Kelty, Stephen P. ; Madey, Theodore E. / Atomic structure of O/Ir(2 1 0) nanofacets. In: Surface Science. 2005 ; Vol. 596, No. 1-3. pp. 89-97.
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