Nanotemplate with holes: Ultra-thin alumina on Ni3Al(111)

M. Schmid1, G. Kresse2, A. Buchsbaum1, E. Napetschnig1, S. Gritschneder3*, M. Reichling3, P. Varga1

1 Institut für Allgemeine Physik, Technische Universität Wien, 1040 Wien, Austria
2 Faculty of Physics & Centre for Computational Materials Science, Universität Wien, 1090 Wien, Austria
3 Fachbereich Physik, Universität Osnabrück, 49076 Osnabrüuck, Germany
* Present Address: Institut f. Experimentelle und Angewandte Physik; Universität Regensburg, 93053 Regensburg, Germany

Phys. Rev. Lett. 99 (2007) 196104

We have determined the structure of the ultrathin (√67 × √67)R12.2° aluminum oxide on Ni3Al(111) by a combination of scanning tunneling microscopy and density functional theory. In addition to other local defects, the main structural feature of the unit cell is a 0.4-nm-diameter hole reaching down to the metal substrate. Understanding the structure and metal growth on this oxide allows us to use it as a template for growing highly regular arrays of nanoparticles.

Corresponding author: M. Schmid (schmid< encoded email address >).

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