Quasicrystalline epitaxial single element monolayers on icosahedral Al-pd-mn and decagonal Al-ni-co quasicrystal surfaces

K J Franke; H R Sharma; W Theis; P Gille; Ph Ebert; K H Rieder

doi:10.1103/PhysRevLett.89.156104

Quasicrystalline epitaxial single element monolayers on icosahedral Al-pd-mn and decagonal Al-ni-co quasicrystal surfaces

Phys Rev Lett. 2002 Oct 7;89(15):156104. doi: 10.1103/PhysRevLett.89.156104. Epub 2002 Sep 23.

Authors

K J Franke¹, H R Sharma, W Theis, P Gille, Ph Ebert, K H Rieder

Affiliation

¹ Institut für Experimentalphysik der Freien Universität Berlin, Germany.

PMID: 12366004
DOI: 10.1103/PhysRevLett.89.156104

Abstract

Single element quasicrystalline monolayers were prepared by deposition of antimony and bismuth on the fivefold surface of icosahedral Al71.5Pd21Mn8.5 and the tenfold surface of decagonal Al71.8Ni14.8Co13.4. Elastic helium atom scattering and low energy electron diffraction of the monolayers show Bragg peaks at the bulk derived positions of the clean surfaces, revealing highly ordered quasicrystalline epitaxial films. Their adatom densities of (0.9+/-0.2)x10(15) cm(-2) and (0.8+/-0.2)x10(15) cm(-2) on Al-Pd-Mn and Al-Ni-Co, respectively, correspond to roughly one adatom per Al atom of the quasicrystalline substrate surfaces.