Adsorbate-promoted tunneling-electron-induced local faceting of D/Pd{110}-(1 × 2)

Adam R. Kurland; Patrick Han; John C. Thomas; Andrea N. Giordano; Paul S. Weiss

doi:10.1021/jz100640y

Adsorbate-promoted tunneling-electron-induced local faceting of D/Pd{110}-(1 × 2)

Adam R. Kurland, Patrick Han, John C. Thomas, Andrea N. Giordano, Paul S. Weiss

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

3 Citations (Scopus)

Abstract

We have utilized tunneling electrons and thiophene adsorption to draw deuterium (D) from within the single-crystal bulk beneath Pd{110} up to subsurface adsorption sites. We found local faceting induced by this process, and determined the energy threshold of drawing bulk D to subsurface sites to be 0.38 ± 0.02 eV. We show that these facets propagate along the [1 10̄] direction of the substrate, and that Pd{110} adopts the (1 Å - 1) surface reconstruction on the induced facets, yet maintains the paired row (1 × 2) structure on unaffected regions. After producing subsurface D, the facet plane tilts 3.2 ± 0.8° off the substrate plane.

Original language	English
Pages (from-to)	2288-2294
Number of pages	7
Journal	Journal of Physical Chemistry Letters
Volume	1
Issue number	15
DOIs	https://doi.org/10.1021/jz100640y
Publication status	Published - 2010 Aug 5

ASJC Scopus subject areas

Materials Science(all)
Physical and Theoretical Chemistry

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title = "Adsorbate-promoted tunneling-electron-induced local faceting of D/Pd{110}-(1 × 2)",

abstract = "We have utilized tunneling electrons and thiophene adsorption to draw deuterium (D) from within the single-crystal bulk beneath Pd{110} up to subsurface adsorption sites. We found local faceting induced by this process, and determined the energy threshold of drawing bulk D to subsurface sites to be 0.38 ± 0.02 eV. We show that these facets propagate along the [1 1{\=0}] direction of the substrate, and that Pd{110} adopts the (1 {\AA} - 1) surface reconstruction on the induced facets, yet maintains the paired row (1 × 2) structure on unaffected regions. After producing subsurface D, the facet plane tilts 3.2 ± 0.8° off the substrate plane.",

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AU - Thomas, John C.

AU - Giordano, Andrea N.

AU - Weiss, Paul S.

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N2 - We have utilized tunneling electrons and thiophene adsorption to draw deuterium (D) from within the single-crystal bulk beneath Pd{110} up to subsurface adsorption sites. We found local faceting induced by this process, and determined the energy threshold of drawing bulk D to subsurface sites to be 0.38 ± 0.02 eV. We show that these facets propagate along the [1 10̄] direction of the substrate, and that Pd{110} adopts the (1 Å - 1) surface reconstruction on the induced facets, yet maintains the paired row (1 × 2) structure on unaffected regions. After producing subsurface D, the facet plane tilts 3.2 ± 0.8° off the substrate plane.

AB - We have utilized tunneling electrons and thiophene adsorption to draw deuterium (D) from within the single-crystal bulk beneath Pd{110} up to subsurface adsorption sites. We found local faceting induced by this process, and determined the energy threshold of drawing bulk D to subsurface sites to be 0.38 ± 0.02 eV. We show that these facets propagate along the [1 10̄] direction of the substrate, and that Pd{110} adopts the (1 Å - 1) surface reconstruction on the induced facets, yet maintains the paired row (1 × 2) structure on unaffected regions. After producing subsurface D, the facet plane tilts 3.2 ± 0.8° off the substrate plane.

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