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Structural study of CH3S self-assembled monolayers on Au(111) |
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| Authors: | Gianangelo Bracco Davide Cavanna Valentina De Renzi |
| Affiliation: | a CNR-INFM and CNR-IMEM, Dipartimento di Fisica dell'Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy b Dipartimento di Chimica e Chimica Industriale dell'Università di Genova, Via Dodecaneso 31, 16146 Genova, Italy c Dipartimento di Fisica, Universita' di Modena e Reggio Emilia and INFM National Research Center on nanoStructures and bioSystems at Surfaces (S3), Via Campi 213/A, 41100 Modena, Italy |
| Abstract: | 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 (√3 × √3) periodicity, in agreement with previous results obtained by means of low-energy electron diffraction. |
| Keywords: | Self-assembly Dimethyl disulfide Gold Helium diffraction |
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