K Pussi et al 2009 J. Phys.: Condens. Matter 21 474213 doi:10.1088/0953-8984/21/47/474213
K Pussi1, M Gierer2 and R D Diehl3
Show affiliationsA thin film of copper on the fivefold surface of Al–Pd–Mn forms a structure that is uniaxially commensurate with the aperiodic structure of the substrate. This structure has been analyzed using low-energy electron diffraction and is found to consist of a vicinal surface of a body-centered tetragonal (bct) (100) structure. This bct(100) structure has lattice parameters of a = 2.88 Å, b = 2.55 Å and c = 2.88 Å, with the vicinal surface making an angle α of 13.28° relative to the a–b plane. This structure provides an explanation for the delayed ordering observed during the growth of the film. Simple conditions are derived for which the growth of ordered one-dimensionally quasiperiodic thin films on quasicrystals may be favorable. This finding is relevant to the use of quasicrystals as a means of matching interfaces in thin film systems.
Issue 47 (25 November 2009)
Received 6 April 2009
Published 5 November 2009
K Pussi et al 2009 J. Phys.: Condens. Matter 21 474213
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