The role of interfacial strain in the surface p4g reconstruction: A comparison between Pd(001)-(2 × 2)p4g-Al and Cu3Pt(001)

Y. G. Shen; D. J. O'Connor; R. J. MacDonald

doi:10.1088/0953-8984/9/40/003

The role of interfacial strain in the surface p4g reconstruction: A comparison between Pd(001)-(2 × 2)p4g-Al and Cu3Pt(001)

Y. G. Shen, D. J. O'Connor, R. J. MacDonald

Research output: Journal Publications and Reviews › RGC 62 - Review of books or of software (or similar publications/items) › peer-review

9 Citations (Scopus)

Abstract

The surface composition and structure of the Pd(001)-(2 × 2)p4g-Al phase have been studied by low-energy ion scattering (LEIS) and low-energy electron diffraction (LEED). It was found that annealing Al-covered surfaces with initial coverages from half to larger than one monolayer (ML) to about 900 K gave rise to a stable (2 × 2)p4g LEED pattern. The ion scattering data suggest that the reconstruction is due to an ordered c(2 × 2) Al-Pd underlayer below a clock-rotated (001) Pd termination. To better understand the Pd(001)-(2 × 2)p4g-Al system, we have also studied an ordered Cu₃Pt(001) alloy surface, which exhibits the stable c(2 × 2) structure with an ordered c(2 × 2) Cu-Pt underlayer below a (1 × 1) Cu termination. Strain analysis shows that the top-layer reconstruction for the (2 × 2)p4g surface is caused by the Al-induced interfacial strain.

Original language	English
Pages (from-to)	8345-8358
Journal	Journal of Physics Condensed Matter
Volume	9
Issue number	40
DOIs	https://doi.org/10.1088/0953-8984/9/40/003
Publication status	Published - 6 Oct 1997
Externally published	Yes

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title = "The role of interfacial strain in the surface p4g reconstruction: A comparison between Pd(001)-(2 × 2)p4g-Al and Cu3Pt(001)",

abstract = "The surface composition and structure of the Pd(001)-(2 × 2)p4g-Al phase have been studied by low-energy ion scattering (LEIS) and low-energy electron diffraction (LEED). It was found that annealing Al-covered surfaces with initial coverages from half to larger than one monolayer (ML) to about 900 K gave rise to a stable (2 × 2)p4g LEED pattern. The ion scattering data suggest that the reconstruction is due to an ordered c(2 × 2) Al-Pd underlayer below a clock-rotated (001) Pd termination. To better understand the Pd(001)-(2 × 2)p4g-Al system, we have also studied an ordered Cu3Pt(001) alloy surface, which exhibits the stable c(2 × 2) structure with an ordered c(2 × 2) Cu-Pt underlayer below a (1 × 1) Cu termination. Strain analysis shows that the top-layer reconstruction for the (2 × 2)p4g surface is caused by the Al-induced interfacial strain.",

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The role of interfacial strain in the surface p4g reconstruction: A comparison between Pd(001)-(2 × 2)p4g-Al and Cu3Pt(001). / Shen, Y. G.; O'Connor, D. J.; MacDonald, R. J.
In: Journal of Physics Condensed Matter, Vol. 9, No. 40, 06.10.1997, p. 8345-8358.

Research output: Journal Publications and Reviews › RGC 62 - Review of books or of software (or similar publications/items) › peer-review

TY - JOUR

T1 - The role of interfacial strain in the surface p4g reconstruction

T2 - A comparison between Pd(001)-(2 × 2)p4g-Al and Cu3Pt(001)

AU - Shen, Y. G.

AU - O'Connor, D. J.

AU - MacDonald, R. J.

PY - 1997/10/6

Y1 - 1997/10/6

N2 - The surface composition and structure of the Pd(001)-(2 × 2)p4g-Al phase have been studied by low-energy ion scattering (LEIS) and low-energy electron diffraction (LEED). It was found that annealing Al-covered surfaces with initial coverages from half to larger than one monolayer (ML) to about 900 K gave rise to a stable (2 × 2)p4g LEED pattern. The ion scattering data suggest that the reconstruction is due to an ordered c(2 × 2) Al-Pd underlayer below a clock-rotated (001) Pd termination. To better understand the Pd(001)-(2 × 2)p4g-Al system, we have also studied an ordered Cu3Pt(001) alloy surface, which exhibits the stable c(2 × 2) structure with an ordered c(2 × 2) Cu-Pt underlayer below a (1 × 1) Cu termination. Strain analysis shows that the top-layer reconstruction for the (2 × 2)p4g surface is caused by the Al-induced interfacial strain.

AB - The surface composition and structure of the Pd(001)-(2 × 2)p4g-Al phase have been studied by low-energy ion scattering (LEIS) and low-energy electron diffraction (LEED). It was found that annealing Al-covered surfaces with initial coverages from half to larger than one monolayer (ML) to about 900 K gave rise to a stable (2 × 2)p4g LEED pattern. The ion scattering data suggest that the reconstruction is due to an ordered c(2 × 2) Al-Pd underlayer below a clock-rotated (001) Pd termination. To better understand the Pd(001)-(2 × 2)p4g-Al system, we have also studied an ordered Cu3Pt(001) alloy surface, which exhibits the stable c(2 × 2) structure with an ordered c(2 × 2) Cu-Pt underlayer below a (1 × 1) Cu termination. Strain analysis shows that the top-layer reconstruction for the (2 × 2)p4g surface is caused by the Al-induced interfacial strain.

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VL - 9

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JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 40

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The role of interfacial strain in the surface p4g reconstruction: A comparison between Pd(001)-(2 × 2)p4g-Al and Cu3Pt(001)

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