Self-Organization of L-Serine on Cu(001)

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  • Iwai Hidekazu
    Department of Material and Environmental Chemistry, Graduate School of Engineering, Utsunomiya University, Japan
  • Emori Akira
    Department of Material and Environmental Chemistry, Graduate School of Engineering, Utsunomiya University, Japan
  • Egawa Chikashi
    Department of Material and Environmental Chemistry, Graduate School of Engineering, Utsunomiya University, Japan

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We investigated two self-organized structures of the L-serine on the Cu(001) surface using LEED and STM at 310 K. The first structure just after L-serine deposition formed as thick line domains with width of about 10 nm in (2 -1, 2 4) periodicity, and the second was observed as thin line domains of one-dimensional structure in (2 1, x y) periodicity (where x and y are any integer). These structures were considered by high-resolution STM images in which a protrusion was discriminated as an adsorbate, and we propose interesting structure models. The former structure consists of L-serine dimers as octameric cluster-like of serine, on the other hand, the latter is formed by two serine rows connected in rotated symmetry with (2 1, x y) periodicity. [DOI: 10.1380/ejssnt.2009.821]

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