Metastable and stable overstructures of In on W(110)

Gabl, Martin; Trzciński, Marek; Memmel, N.; Bukaluk, A.; Bertel, E.

doi:10.1016/j.susc.2006.02.082

Cited by 6 publications

(17 citation statements)

References 8 publications

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“…All the observed features, like drastic energy shift and the change of the shape of Ag 4d valence band, energy shift and narrowing of In 4d line, confirm conclusions of previous studies [10] that effective intermixing of In and Ag occurs leading to the formation of surface alloy.…”

Section: Surface Diffusion Of In Atoms On the Polycrystalline Tungstesupporting

confidence: 88%

“…The black dots, corresponding to positions of In atoms, clearly demonstrate that In is ordered, with an In-In distance exceeding the W-W distance. In our previous LEED and STM investigations we proved that the pattern corresponds to the (3 × 1) superstructure [10].…”

Section: Leed and Aes Studies Of Ultrathin In Layers Formation On Thementioning

confidence: 60%

“…1c became more distinct. Comparative STM and LEED studies [10] allowed to indicate that (1×4) superstructure started (Fig. 1b), • -0.45 ML In on W(110) (Fig.…”

Section: Leed and Aes Studies Of Ultrathin In Layers Formation On Thementioning

confidence: 95%

“…vious papers we have studied mechanism of growth of In ultrathin layers on the W(110) by means of photoelectron spectroscopy combined with low energy electron diffraction (LEED) [9], and by scanning tunnelling microscopy (STM) and LEED methods [10]. Preliminary studies of In diffusion on W(110) surface [11] as well as intermixing in the In/Ag/W(110) and Ag/In/W(110) structures [12] have also been performed.…”

Section: S-19mentioning

confidence: 99%

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Study of Ultrathin In-Ag Layers οn Tungsten by Means of Surface Spectroscopy Techniques

2008

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Auger electron spectroscopy, X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, scanning tunnelling microscopy, low energy electron diffraction, and thermodesorption methods were used to investigate the process of growth of ultrathin In films and formation of In-Ag surface alloys on tungsten substrate. Several indium layers, having coverage ranging from 0.2 to 0.8 ML were deposited on tungsten substrate in room temperature. It was found that at the lowest coverages (Θ = 0.1-0.3 ML) indium atoms form (3 × 1) structure, characterized by very sharp low energy electron diffraction patterns. With increasing Θ they tend to form densely packed islands interpreted as slightly distorted In(111) monolayers. Surface diffusion of In onto the tungsten surface was studied by using ESCA imaging property of SCIENTA ESCA200 instrument. Measuring the photoelectron intensity as a function of two spatial coordinates and the energy, we observed movement of In atoms on the tungsten surface. On the basis of the change of surface coverage with distance surface the diffusion coefficient was evaluated at the temperature range of 400-700 K. Intermixing of ultrathin films of indium and silver, after their surface diffusion from the sample edges to the centre of the tungsten surface, were observed by using X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy and the Auger electron spectroscopy methods. Intermixing was controlled by means of photoemission spectra from the valence states and the In 4d level, as well as by X-ray photoelectron spectroscopy studies of indium and silver core levels excited by Al Kα source.

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Section: Surface Diffusion Of In Atoms On the Polycrystalline Tungstesupporting

confidence: 88%

Section: Leed and Aes Studies Of Ultrathin In Layers Formation On Thementioning

confidence: 60%

“…1c became more distinct. Comparative STM and LEED studies [10] allowed to indicate that (1×4) superstructure started (Fig. 1b), • -0.45 ML In on W(110) (Fig.…”

Section: Leed and Aes Studies Of Ultrathin In Layers Formation On Thementioning

confidence: 95%

Section: S-19mentioning

confidence: 99%

See 2 more Smart Citations

Study of Ultrathin In-Ag Layers οn Tungsten by Means of Surface Spectroscopy Techniques

2008

Self Cite

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show abstract

“…In our previous papers, we have studied, in considerable detail, the growth of In ultrathin layers on the W(1 1 0) by means of photoelectron spectroscopy combined with LEED [6], STM and LEED [7] methods. Surface diffusion studies of In on W[1 1 0] have also been performed [8], as well as preliminary studies of In/Ag/W(1 1 0) and Ag/In/W(1 1 0) structures [9].…”

Section: Introductionmentioning

confidence: 99%