Tiling of the fivefold surface of Al sub 70 Pd sub 21 Mn sub 9
The nature of the fivefold surface of Al sub 70 Pd sub 21 Mn sub 9 has been investigated using scanning tunnelling microscopy. From high resolution images of the terraces, a tiling of the surface has been constructed using pentagonal prototiles. This tiling matches the bulk model of Boudard et al. [...
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Veröffentlicht in: | Surface science 2001-10, Vol.492 (3), p.L729-L734 |
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Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The nature of the fivefold surface of Al sub 70 Pd sub 21 Mn sub 9 has been investigated using scanning tunnelling microscopy. From high resolution images of the terraces, a tiling of the surface has been constructed using pentagonal prototiles. This tiling matches the bulk model of Boudard et al. [J. Phys.: Cond. Matter 4 (1992) 10149], which allows us to elucidate the atomic nature of the surface. Furthermore, it is consistent with a Penrose tiling T exp *((P1)r) obtained from the geometric model based on the three-dimensional tiling T exp *(2F) . The results provide direct confirmation that the fivefold surface of i-Al-Pd-Mn is a termination of the bulk structure. |
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ISSN: | 0039-6028 |