Istituto dei materiali per l'elettronica ed il magnetismo     
Bracco G., Cavanna D., Thea S., De Renzi V. Structural study of CH3S self assembled monolayers on Au(111). In: Vacuum, vol. 82 pp. 1421 - 1424. Selected papers presented at RIVA V-5th Iberian Vacuum Meeting - RIVA-5. Edited by Vasco Teixeira, Augusto M.C. Moutinho and Josť L. de Segovia. Elsevier, 2008.
We present preliminary results of an experimental investigation of ordered phases of CH3S chemisorbed on Au(111). The self-assembled monolayer has been grown by dosing dimethyl disulfide in ultrahigh vacuum at different substrate temperatures between 200 K and 320 K and following different protocols. The monolayers have been characterized by means of low-energy He atom scattering with time-of-flight detection in a temperature range between 150 K and 300 K. The observed diffraction patterns show that the main periodicity is well-described by the (3 4) overlayer of the Au(111) lattice, coexisting with the (O3 O3) periodicity, in agreement with previous results obtained by means of low-energy electron diffraction.
URL: http://dx.doi.org/10.1016/j.vacuum.2008.03.017
DOI: 10.1016/j.vacuum.2008.03.017
Subject Self-assembly
Dimethyl disulfide
Helium diffraction
68.49.Bc Atom scattering from surfaces (diffraction and energy transfer)

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