Smerdon, J.A., Cross, N., Dhanak, V.R., Sharma, H.R., Young, K.M., Lograsso, T.A., Ross, A.R. and McGrath, R. (2010) Structure and reactivity of Bi alltiotropes on the fivefold icosahedral Al-Pd-Mn quasicrystal surface. Journal of Physics Condensed Matter, 22 (34). p. 345002. ISSN 09538984
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Official URL: http://dx.doi.org/10.1088/0953-8984/22/34/345002
The growth of Bi on a pseudomorphic Bi monolayer on the fivefold surface of the icosahedral Al-Pd-Mn quasicrystal has been investigated using low energy electron diffraction and scanning tunnelling microscopy. Initially randomly oriented pseudocubic islands are formed with a preference for an even number of layers. Subsequently a morphological transformation takes place to hexagonal Bi islands, which align along high symmetry directions of the substrate. The Bi flux is found to have a strong effect on which island structure is preferred. When C 60 is adsorbed on the three different allotropes of Bi present in this system, hexagonal C 60 islands are formed in each case. On the pseudocubic and hexagonal islands, the C 60 islands are aligned with the substrate. We discuss the energetic, kinetic and geometrical factors which influence the morphological transformation referred to above.
|Subjects:||Physical sciences > Physics|
|Schools:||Faculty of Science and Technology > School of Physical Sciences and Computing|
|Deposited By:||Carmit Erez|
|Deposited On:||10 May 2013 10:32|
|Last Modified:||17 May 2016 12:41|
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