Adsorption sites of Te on Si(0 0 1)

P. F. Lyman; D. A. Walko; D. L. Marasco; H. L. Hutchason; M. E. Keeffe; P. A. Montano; M. J. Bedzyk

doi:10.1016/j.susc.2004.05.071

Adsorption sites of Te on Si(0 0 1)

P. F. Lyman^*, D. A. Walko, D. L. Marasco, H. L. Hutchason, M. E. Keeffe, P. A. Montano, M. J. Bedzyk

^*Corresponding author for this work

Materials Science and Engineering

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

3 Scopus citations

Abstract

Using multiple surface science techniques, we have investigated the structure of 0.3-1 Te monolayers adsorbed on Si(001). X-ray standing waves, low-energy electron diffraction, temperature-programmed desorption, and Auger electron spectroscopy show a relatively poorly-ordered surface. The disorder is due to two nearly degenerate Te adsorption sites, which tends to double the periodicity along one direction of the surface and reduces adatom/substrate mismatch by slightly increasing the separation of adjacent Te atoms. High-temperature anneals around 575 °C increase the degree of local and long-range order, while leaving the average local structure unchanged. Our findings are consistent with recent ab initio molecular dynamics simulations but not with experimental studies wherein surfaces were prepared by desorption of CdTe films.

Original language	English (US)
Pages (from-to)	248-260
Number of pages	13
Journal	Surface Science
Volume	561
Issue number	2-3
DOIs	https://doi.org/10.1016/j.susc.2004.05.071
State	Published - Jul 20 2004

Keywords

Chalcogens
Low energy electron diffraction (LEED)
Low index single crystal surfaces
Silicon
Surface structure, morphology, roughness, and topography
Thermal desorption spectroscopy
X-ray standing waves

ASJC Scopus subject areas

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

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title = "Adsorption sites of Te on Si(0 0 1)",

abstract = "Using multiple surface science techniques, we have investigated the structure of 0.3-1 Te monolayers adsorbed on Si(001). X-ray standing waves, low-energy electron diffraction, temperature-programmed desorption, and Auger electron spectroscopy show a relatively poorly-ordered surface. The disorder is due to two nearly degenerate Te adsorption sites, which tends to double the periodicity along one direction of the surface and reduces adatom/substrate mismatch by slightly increasing the separation of adjacent Te atoms. High-temperature anneals around 575 °C increase the degree of local and long-range order, while leaving the average local structure unchanged. Our findings are consistent with recent ab initio molecular dynamics simulations but not with experimental studies wherein surfaces were prepared by desorption of CdTe films.",

keywords = "Chalcogens, Low energy electron diffraction (LEED), Low index single crystal surfaces, Silicon, Surface structure, morphology, roughness, and topography, Thermal desorption spectroscopy, X-ray standing waves",

author = "Lyman, {P. F.} and Walko, {D. A.} and Marasco, {D. L.} and Hutchason, {H. L.} and Keeffe, {M. E.} and Montano, {P. A.} and Bedzyk, {M. J.}",

note = "Funding Information: We wish to thank T.-L. Lee for help with the TPD experiment and P. Sen for helpful discussions. This work was supported by the US Department of Energy under contract No. W-31-109-ENG-38 to Argonne National Laboratory, contract No. DE-AC02-98CH10886 to National Synchrotron Light Source at Brookhaven National Laboratory, and by the National Science Foundation under contract No. DMR-9973436, and under contract No. DMR-0076097 to the MRC at Northwestern University. One of us (PFL) is supported by NSF Grant No. DMR-9984442. ",

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doi = "10.1016/j.susc.2004.05.071",

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AU - Lyman, P. F.

AU - Walko, D. A.

AU - Marasco, D. L.

AU - Hutchason, H. L.

AU - Keeffe, M. E.

AU - Montano, P. A.

AU - Bedzyk, M. J.

N1 - Funding Information: We wish to thank T.-L. Lee for help with the TPD experiment and P. Sen for helpful discussions. This work was supported by the US Department of Energy under contract No. W-31-109-ENG-38 to Argonne National Laboratory, contract No. DE-AC02-98CH10886 to National Synchrotron Light Source at Brookhaven National Laboratory, and by the National Science Foundation under contract No. DMR-9973436, and under contract No. DMR-0076097 to the MRC at Northwestern University. One of us (PFL) is supported by NSF Grant No. DMR-9984442.

PY - 2004/7/20

Y1 - 2004/7/20

N2 - Using multiple surface science techniques, we have investigated the structure of 0.3-1 Te monolayers adsorbed on Si(001). X-ray standing waves, low-energy electron diffraction, temperature-programmed desorption, and Auger electron spectroscopy show a relatively poorly-ordered surface. The disorder is due to two nearly degenerate Te adsorption sites, which tends to double the periodicity along one direction of the surface and reduces adatom/substrate mismatch by slightly increasing the separation of adjacent Te atoms. High-temperature anneals around 575 °C increase the degree of local and long-range order, while leaving the average local structure unchanged. Our findings are consistent with recent ab initio molecular dynamics simulations but not with experimental studies wherein surfaces were prepared by desorption of CdTe films.

AB - Using multiple surface science techniques, we have investigated the structure of 0.3-1 Te monolayers adsorbed on Si(001). X-ray standing waves, low-energy electron diffraction, temperature-programmed desorption, and Auger electron spectroscopy show a relatively poorly-ordered surface. The disorder is due to two nearly degenerate Te adsorption sites, which tends to double the periodicity along one direction of the surface and reduces adatom/substrate mismatch by slightly increasing the separation of adjacent Te atoms. High-temperature anneals around 575 °C increase the degree of local and long-range order, while leaving the average local structure unchanged. Our findings are consistent with recent ab initio molecular dynamics simulations but not with experimental studies wherein surfaces were prepared by desorption of CdTe films.

KW - Chalcogens

KW - Low energy electron diffraction (LEED)

KW - Low index single crystal surfaces

KW - Silicon

KW - Surface structure, morphology, roughness, and topography

KW - Thermal desorption spectroscopy

KW - X-ray standing waves

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JO - Surface Science

JF - Surface Science

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Adsorption sites of Te on Si(0 0 1)

Abstract

Keywords

ASJC Scopus subject areas

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