Tiling of the five-fold surface of Al(70)Pd(21)Mn(9)

Details Tiling of the five-fold surface of Al(70)Pd(21)Mn(9) Tiling of the five-fold surface of Al(70)Pd(21)Mn(9)

2001-04-25

arxiv.org/abs/cond-mat/0104490v1

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

10.1016/S0039-6028(01)01463-7

The nature of the five-fold surface of Al(70)Pd(21)Mn(9) has been investigated using scanning tunneling 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, 10149, (1992)), which allows us to elucidate the atomic nature of the surface. Furthermore, it is consistent with a Penrose tiling T^*((P1)r) obtained from the geometric model based on the three-dimensional tiling T^*(2F). The results provide direct confirmation that the five-fold surface of i-Al-Pd-Mn is a termination of the bulk structure.

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