Self-Organization Of L-Serine On Cu(001)

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(2) -1(4)) (2(x) 1(y)) periodicity, and the second was observed as thin line domains of one-dimensional structure in 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(x) 1(y)) periodicity.