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McAlinden N, McGilp JF. Using surface and interface optics to probe the capping, with amorphous Si, of Au atom chains grown on vicinal Si(111). J Phys Condens Matter. 2009;21(47):474208doi: 10.1088/0953-8984/21/47/474208.
McAlinden, N., & McGilp, J. F. (2009). Using surface and interface optics to probe the capping, with amorphous Si, of Au atom chains grown on vicinal Si(111). Journal of physics. Condensed matter : an Institute of Physics journal, 21(47), 474208. https://doi.org/10.1088/0953-8984/21/47/474208
McAlinden, N, and McGilp, J F. "Using surface and interface optics to probe the capping, with amorphous Si, of Au atom chains grown on vicinal Si(111)." Journal of physics. Condensed matter : an Institute of Physics journal vol. 21,47 (2009): 474208. doi: https://doi.org/10.1088/0953-8984/21/47/474208
McAlinden N, McGilp JF. Using surface and interface optics to probe the capping, with amorphous Si, of Au atom chains grown on vicinal Si(111). J Phys Condens Matter. 2009 Nov 25;21(47):474208. doi: 10.1088/0953-8984/21/47/474208. Epub 2009 Nov 05. PMID: 21832487.
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J Phys Condens Matter. 2009 Nov 25;21(47):474208. doi: 10.1088/0953-8984/21/47/474208. Epub 2009 Nov 05.

Using surface and interface optics to probe the capping, with amorphous Si, of Au atom chains grown on vicinal Si(111).

Journal of physics. Condensed matter : an Institute of Physics journal

N McAlinden, J F McGilp

Affiliations

  1. School of Physics, Trinity College Dublin, Dublin 2, Republic of Ireland.

PMID: 21832487 DOI: 10.1088/0953-8984/21/47/474208

Abstract

The distinct optical signatures of aligned single and double Au atom chain structures, grown on vicinal Si(111) substrates, have been identified using reflectance anisotropy spectroscopy (RAS). Deposition of 0.04 monolayers (ML) of amorphous Si (a-Si) at room temperature perturbs the anisotropic optical response of the double chain structure. By one third of a monolayer, no significant optical anisotropy associated with the chains remains. No anisotropic response re-emerges at higher coverages, up to 4.6 nm (14.5 ML) where there is recent evidence that the crystal structure of the double chain phase is maintained under the cap. The RAS results show that the anisotropic properties of the phase are quenched by a-Si adsorption, even though the crystal structure of the capped phase appears to be preserved.

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