Structure and local reactivity of the Au(111) surface reconstruction

Hanke, Felix; Björk, Jonas

doi:10.1103/physrevb.87.235422

Cited by 138 publications

(167 citation statements)

References 48 publications

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“…Therefore, the appearance of chains may already be seen as a first step towards lifting the herringbone reconstruction. Nevertheless, we can refer to analogy with results of theoretical works on electronegative adsorbates (fluorine, sulfur) on the Au(111)-(22 × √ 3) surface [22,23]. According to DFT calculations, the minimum of adsorption energy for fluorine [22] and sulfur [23] corresponds to the position in the center of fcc domain.…”

Section: Resultsmentioning

confidence: 99%

Self-ordered nanoporous lattice formed by chlorine atoms on Au(111)

et al. 2016

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A self-ordered nanoporous lattice formed by individual chlorine atoms on the Au(111) surface has been studied with low-temperature scanning tunneling microscopy, low-energy electron diffraction, and density functional theory calculations. We have found out that room-temperature adsorption of 0.09-0.30 monolayers of chlorine on Au(111) followed by cooling below 110 K results in the spontaneous formation of a nanoporous quasihexagonal structure with a periodicity of 25-38Å depending on the initial chlorine coverage. The driving force of the superstructure formation is attributed to the substrate-mediated elastic interaction.

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Section: Resultsmentioning

confidence: 99%

Self-ordered nanoporous lattice formed by chlorine atoms on Au(111)

et al. 2016

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“…92 However, Figure 7b shows instead that the area of α domains is 20% larger than that of the β domains. This can be ascribed to the fact that α-phase domains appear to be more easily able to extend over the soliton walls and occupy fcc regions of the surface.…”

mentioning

confidence: 88%

Substrate, Molecular Structure, and Solvent Effects in 2D Self-Assembly via Hydrogen and Halogen Bonding

et al. 2014

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Recently, halogen···halogen interactions have been demonstrated to stabilize two-dimensional supramolecular assemblies at the liquid−solid interface. Here we study the effect of changing the halogen, and report on the 2D supramolecular structures obtained by the adsorption of 2,4,6-tris(4-bromophenyl)-1,3,5-triazine (TBPT) and 2,4,6-tris(4-iodophenyl)-1,3,5-triazine (TIPT) on both highly oriented pyrolytic graphite and the (111) facet of a gold single crystal. These molecular systems were investigated by combining room-temperature scanning tunneling microscopy in ambient conditions with density functional theory, and are compared to results reported in the literature for the similar molecules 1,3,5-tri(4-bromophenyl)benzene (TBPB) and 1,3,5-tri(4-iodophenyl)benzene (TIPB). We find that the substrate exerts a much stronger effect than the nature of the halogen atoms in the molecular building blocks. Our results indicate that the triazine core, which renders TBPT and TIPT stiff and planar, leads to stronger adsorption energies and hence structures that are different from those found for TBPB and TIPB. On the reconstructed Au(111) surface we find that the TBPT network is sensitive to the fcc-and hcp-stacked regions, indicating a significant substrate effect. This makes TBPT the first molecule reported to form a continuous monolayer at room temperature in which molecular packing is altered on the differently reconstructed regions of the Au(111) surface. Solvent-dependent polymorphs with solvent coadsorption were observed for TBPT on HOPG. This is the first example of a multicomponent self-assembled molecular networks involving the rare cyclic, hydrogen-bonded hexamer of carboxylic groups, R 6 6 (24) synthon.

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“…The profile lines crossing the herringbone structure shows a surface corrugation corresponding to the crossing from fcc to hcp. Each herringbone structure is ending at a 0.2 nm mono atomic step height with the herringbone structure continuously extending on the neighbor lower terrace [28].…”

Section: Atomic Resolutionmentioning

confidence: 99%

Imaging, single atom contact and single atom manipulations at low temperature using the new ScientaOmicron LT-UHV-4 STM

Yang

Sordes

Kolmer

et al. 2016

Eur. Phys. J. Appl. Phys.

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Abstract. The performances of the new ScientaOmicron LT-UHV 4-STM microscope have been certified by a series of state-of-art STM experiments on an Au(1 1 1) surface at 4.3 K. During the STM operation of the 4 STM scanners (independently or in parallel with an inter tip apex front to front distance down to a few tens of nanometers), a ΔZ stability of about 2 pm per STM was demonstrated. With this LT-UHV 4-STM stability, single Au atom manipulation experiments were performed on Au(1 1 1) by recording the pulling, sliding and pushing manipulation signals per scanner. Jump to contact experiments lead to perfectly linear low voltage I-V characteristics on a contacted single Au ad-atom with no need of averaging successive I-V's. Our results show how this new instrument is exactly 4 times a very precise single tip LT-UHV-STM. Two tips surface conductance measurements were performed on Au(1 1 1) using a lock-in technique in a floating sample mode of operation to capture the Au(1 1 1) surface states via two STM tips dI/dV characteristics.

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Structure and local reactivity of the Au(111) surface reconstruction

Cited by 138 publications

References 48 publications

Self-ordered nanoporous lattice formed by chlorine atoms on Au(111)

Self-ordered nanoporous lattice formed by chlorine atoms on Au(111)

Substrate, Molecular Structure, and Solvent Effects in 2D Self-Assembly via Hydrogen and Halogen Bonding

Imaging, single atom contact and single atom manipulations at low temperature using the new ScientaOmicron LT-UHV-4 STM

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