Methylthiolate-induced reconstruction of Ag(111): A medium energy ion scattering study

Parkinson, Gareth S.; Hentz, A.; Quinn, P.D.; Window, A. J.; Woodruff, D.P.; Bailey, Paul; Noakes, T.C.Q.

doi:10.1016/j.susc.2006.09.007

Cited by 15 publications

(26 citation statements)

References 25 publications

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“…The resulting structure has the CH 3 S molecules standing upright with the C-S bond pointing along the surface normal in agreement with previous calculations [28,42]. The distance of the S atoms of the different molecules to the surface is the same within ∼ 0.1Å, which represents a very small "rumpling" in agreement with the latest experimental results [41]. The work function of the reconstructed structure is substantially different from that of the unreconstructed structures as will be discussed below.…”

Section: Structuressupporting

confidence: 90%

“…• structure of CH 3 S SAMs on Ag(111)on the basis of NIXSW and medium energy ion scattering (MEIS) experiments [18,40,41]. It involves a surface reconstruction consisting of a 3/7 monolayer of Ag adatoms, which are bonded to the the methylthiolate molecules, Fig.…”

Section: Structuresmentioning

confidence: 99%

“…• reconstructed structure [18,41]. The reconstruction involves a commensurate layer of Ag adatoms at a 3/7 monolayer coverage.…”

Section: Structuresmentioning

confidence: 99%

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Dipole Formation at Interfaces of Alkanethiolate Self-assembled Monolayers and Ag(111)

2007

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The formation of interface dipoles in self-assembled monolayers (SAMs) of -CH3 and -CF3 terminated short-chain alkanethiolates on Ag(111) is studied by means of density functional theory calculations. The interface dipoles are characterized by monitoring the change in the surface work function upon adsorption of the SAM. We compare results obtained for SAMs in structures with a different packing density of molecules, i.e. (• , and p(2×2). The work function of alkanethiolate SAMs on silver depends weakly on the packing density; that of fluorinated alkanethiolates shows a stronger dependance. The results are analyzed in terms of two nearly independent contributions to the interface dipole. These originate respectively from the molecular dipoles and from a charge transfer between the metal surface and the molecules. The charge transfer is determined by the silver-sulfur bond and it is independent of the electronegativity of the molecules.

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Section: Structuressupporting

confidence: 90%

Section: Structuresmentioning

confidence: 99%

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Dipole Formation at Interfaces of Alkanethiolate Self-assembled Monolayers and Ag(111)

2007

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“…Later NIXSW and medium ion scattering (MEIS) experiments gave rise to a new model, where the Ag(111) surface reconstructs in the presence of the alkanethiolates to form a 3/7 monolayer of Ag adatoms [92,93,95], see Fig. 3.2.…”

Section: Dipoles Induced By Reconstruction and Sam Adsorption On Au Amentioning

confidence: 99%

“…This can be attributed to the dipole originating from the chemical bond between the SAM and the surface, which is markedly different for Au and Ag surfaces [5,90,91]. More recent structural models of alkanethiolate SAMs on Ag(111) invoke a major reconstruction of the Ag surface involving adatoms [92,93,94,95]. This reconstruction has a large effect on the calculated work function of a methane-thiolate SAM on Ag(111) [96].…”

Section: Introductionmentioning

confidence: 99%

Of interfaces and spin transport across nanoscale layers

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Long‐Range Atomic Order on Double‐Stepped Al₂O₃(0001) Surfaces

Smink,

Majer,

Boschker

et al. 2024

Advanced Materials

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The deterministic preparation of highly ordered single‐crystalline surfaces is a key step for studying and utilizing the physical properties of various advanced materials. This paper presents the fast and straightforward preparation of vicinal Al2O3(0001) surfaces with micrometer‐scale atomic order. Crisp electron‐diffraction spots up to at least 20th order evidence atomic coherence on terraces with widths exceeding 1 µm. The unique combination of three properties of Al2O3(0001) underlie this remarkable coherence: its high‐temperature stability; the differences in the ionic bonding systems of the surface as compared to the bulk; and the fact that the terraces are non‐polar whereas the step edges have a polar character. The step edges are furthermore found to have alternating configurations, which drive a step‐doubling transition. On double‐stepped surfaces, the Al‐rich ° surface reconstruction attains a singular in‐plane orientation. These results set a benchmark for high‐quality surface preparation and thus expand the scope for both fundamental studies on and the technological utilization of exciting material systems.This article is protected by copyright. All rights reserved

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Methylthiolate-induced reconstruction of Ag(111): A medium energy ion scattering study

Cited by 15 publications

References 25 publications

Dipole Formation at Interfaces of Alkanethiolate Self-assembled Monolayers and Ag(111)

Dipole Formation at Interfaces of Alkanethiolate Self-assembled Monolayers and Ag(111)

Of interfaces and spin transport across nanoscale layers

Long‐Range Atomic Order on Double‐Stepped Al₂O₃(0001) Surfaces

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Methylthiolate-induced reconstruction of Ag(111): A medium energy ion scattering study

Cited by 15 publications

References 25 publications

Dipole Formation at Interfaces of Alkanethiolate Self-assembled Monolayers and Ag(111)

Dipole Formation at Interfaces of Alkanethiolate Self-assembled Monolayers and Ag(111)

Of interfaces and spin transport across nanoscale layers

Long‐Range Atomic Order on Double‐Stepped Al2O3(0001) Surfaces

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Product

Resources

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Long‐Range Atomic Order on Double‐Stepped Al₂O₃(0001) Surfaces