First-principles study of Sb adsorption on Ag(110)(2×2)

Nie, Jinlan; Xiao, Haiyan; Zu, Xiaotao; Gao, Fei

doi:10.1016/j.chemphys.2006.03.022

Cited by 7 publications

(3 citation statements)

References 38 publications

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“…Therefore, area A is identified as the Ag(110) surface with the distributed protrusions. The previous theoretical and experimental studies , showed that the most favorable site for the energy of the adsorbed Sb is the substitution site. Thus, the larger atoms observed in Figure a on the surface can be identified as the single Sb atoms on the Ag(110) surface substitution site.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, deposition of Sb on Ag(111) has been extensively studied and the formation process of surface alloys and the evolution of subsequent structures have been revealed . As the most open low-index plane in silver crystals, it is more interesting to study the adsorption of other atoms on the Ag(110) surface than on a compact plane, such as the growth of Si on the surface of Ag(110) to form Si nanoribbons with pentagonal properties. , Although the theory and experiment have shown that the deposition of Sb on the Ag(110) surface can form surface-limited alloys, , there is still a lack of atomic-level research on the formation process of surface alloys and the evolution of subsequent structures.…”

Section: Introductionmentioning

confidence: 99%

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Evolution from Alloying to Nanostrips of Sb on Ag(110) Probed by Scanning Tunneling Microscopy

et al. 2022

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Surface alloys attract great interest due to their exotic properties. However, many experiments lack specific research studies on the formation process of surface alloys and the evolution of subsequent structures. Here, via scanning tunneling microscopy, we investigate the surface structure evolution of Sb on Ag(110) as a function of coverage (denoted as θ). At a low coverage (θ ≤ 0.5 ML), the deposited Sb atoms were incorporated into the topmost layer of Ag( 110), forming the AgSb surface alloy confined to the surface and the c-(2 × 2) alloy islands supported on Ag(110). As the coverage increases (θ > 0.5 ML), chain structures begin to appear at the edge of AgSb alloy islands. When θ increases to a certain extent, the surface is completely transformed into nanostrips along the [001] direction, and no new structure appears with θ up to 5 ML. In addition, we also proposed a possible atomic structure model of the chains and strip structure. Our work is a great help for understanding the specific properties of the surface alloy layer.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evolution from Alloying to Nanostrips of Sb on Ag(110) Probed by Scanning Tunneling Microscopy

et al. 2022

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“…We find that Li atoms are segregated to the surface and not incorporated into subsurface, which was also found to be consistent with the results obtained for Sb atoms on Ag(110). 34 Segregation is a necessary condition for a good surfactant. Without the existence of enough segregation, the surfactant atoms will be buried in the layers that grow initially, and cannot influence the growth mode of subsequent layers.…”

Section: Adsorption Energetics and Structural Parametersmentioning

confidence: 99%

ADSORPTION OFLiONMo(110) SURFACE: A FIRST-PRINCIPLES STUDY

Zhou

Nie

et al. 2009

Surf. Rev. Lett.

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Periodic, self-consistent, density functional theory calculations have been performed to investigate Li adsorption on Mo(110) surface. It turns out that the long-bridge site is the most stable site and the Li-Mo surface alloy forms easily at high coverage with the substitution of Mo by Li atoms in the outermost layer. Work function analysis showed that the work function decreases dramatically as the coverage from 0 to 0.5 ML, and finally increases again at the coverage of 1 ML, which agrees well with the experimental finding of Kroger et al. (Surf. Sci. 449 (2000) 227-235). Vibrational properties, diffusion barrier of Li along the Mo(110) surface, and the energy of formation of the surface have also been investigated for Li adsorption at various coverages.

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