Real-space observation of quasicrystalline Sn monolayer formed on the fivefold surface of icosahedral AlîŠ ̧CuîŠ ̧Fe quasicrystal

We investigate a thin Sn film grown at elevated temperatures on the fivefold surface of an icosahedral AlCuFe quasicrystal by scanning tunneling microscopy (STM). At about one monolayer coverage, the deposited Sn is found to form a smooth film of height consistent with one-half of the lattice constant of the bulk Sn. Analysis based on the Fourier transform and autocorrelation function derived from high-resolution STM images reveals that Sn grows pseudomorphically and hence exhibits a quasicrystalline structure. Disciplines Condensed Matter Physics | Metallurgy Comments This article is from Physical Review B 72 (2005): 045428, doi:10.1103/PhysRevB.72.045428. This article is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/ameslab_pubs/97 Real-space observation of quasicrystalline Sn monolayer formed on the fivefold surface of icosahedral AlACuAFe quasicrystal H. R. Sharma,1,2,* M. Shimoda,1,2 A. R. Ross,3 T. A. Lograsso,3 and A. P. Tsai1,2,4 1National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan 2Solution-Oriented Research for Science and Technology (SORST), Japan Science and Technology Agency, Kawaguchi, Saitama, 332–0012, Japan 3Department of Materials Science and Engineering, Ames Laboratory, Ames, Iowa 50011, USA 4Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, 980-8577, Japan Received 16 December 2004; published 14 July 2005 We investigate a thin Sn film grown at elevated temperatures on the fivefold surface of an icosahedral AluCuuFe quasicrystal by scanning tunneling microscopy STM . At about one monolayer coverage, the deposited Sn is found to form a smooth film of height consistent with one-half of the lattice constant of the bulk Sn. Analysis based on the Fourier transform and autocorrelation function derived from high-resolution STM images reveals that Sn grows pseudomorphically and hence exhibits a quasicrystalline structure. DOI: 10.1103/PhysRevB.72.045428 PACS number s : 61.44.Br, 68.55. a, 68.37.Ef