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arXiv · 0803.3581

Formation of a quasicrystalline Pb monolayer on the ten-fold surface of the decagonal Al-Ni-Co quasicrystal

J. A. Smerdon·L. Leung·J. K. Parle·C. J. Jenks·R. McGrath·V. Fournee·J. Ledieu
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Abstract

Lead has been deposited on the ten-fold surface of decagonal Al72Ni11Co17 to form an epitaxial quasicrystalline single-element monolayer. The overlayer grows through nucleation of nanometer-sized irregular islands and the coverage saturates at 1 ML. The overlayer is well-ordered quasiperiodically as evidenced by LEED and Fourier transforms of STM images. Annealing the film to 600 K improves the structural quality, but causes the evaporation of some material such that the film develops pores. Electronic structure measurements using X-ray photoemission spectroscopy indicate that the chemical interaction of the Pb atoms with the substrate is weak.

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J. A. Smerdon, L. Leung, J. K. Parle, C. J. Jenks, R. McGrath, V. Fournee, J. Ledieu. 2008-03-25. Formation of a quasicrystalline Pb monolayer on the ten-fold surface of the decagonal Al-Ni-Co quasicrystal. https://doi.org/10.1016/j.susc.2008.05.029

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