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

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

doi:10.1016/j.susc.2005.08.024

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

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

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

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 language	English (US)
Pages (from-to)	89-97
Number of pages	9
Journal	Surface Science
Volume	596
Issue number	1-3
DOIs	https://doi.org/10.1016/j.susc.2005.08.024
State	Published - Dec 10 2005
Externally published	Yes

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

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10.1016/j.susc.2005.08.024

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title = "Atomic structure of O/Ir(2 1 0) nanofacets",

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.",

keywords = "Faceting, Iridium (2 1 0), Oxygen, Scanning tunneling microscopy (STM), Surface structure",

author = "Ivan Ermanoski and Changki Kim and Kelty, {Stephen P.} and Madey, {Theodore E.}",

note = "Funding Information: This work has been supported, in part, by the US Department of Energy, Office of Basic Energy Sciences. ",

year = "2005",

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doi = "10.1016/j.susc.2005.08.024",

language = "English (US)",

volume = "596",

pages = "89--97",

journal = "Surface Science",

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T1 - Atomic structure of O/Ir(2 1 0) nanofacets

AU - Ermanoski, Ivan

AU - Kim, Changki

AU - Kelty, Stephen P.

AU - Madey, Theodore E.

N1 - Funding Information: This work has been supported, in part, by the US Department of Energy, Office of Basic Energy Sciences.

PY - 2005/12/10

Y1 - 2005/12/10

N2 - 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.

AB - 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.

KW - Faceting

KW - Iridium (2 1 0)

KW - Oxygen

KW - Scanning tunneling microscopy (STM)

KW - Surface structure

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DO - 10.1016/j.susc.2005.08.024

M3 - Article

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SN - 0039-6028

VL - 596

SP - 89

EP - 97

JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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