Sulfur adatom diffusion on the Cu(111) surface

B. J. Hinch; J. W.M. Frenken; G. Zhang; J. P. Toennies

doi:10.1016/0039-6028(91)90559-B

Sulfur adatom diffusion on the Cu(111) surface

B. J. Hinch^*, J. W.M. Frenken, G. Zhang, J. P. Toennies

^*Corresponding author for this work

Systems, Control and Applied Analysis

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Abstract

This paper presents the first low-energy, quasi-elastic He-atom scattering study of adsorbate atom diffusion. At 820 K sulfur adatoms segregated onto the close-packed (111) surface of a copper crystal at a rate ∼ 0.01 ML/h. These adatoms produce significant diffuse intensity of scattered He and, as evident from the quasielastic energy broadening, are highly mobile. The diffusion coefficient (D = 2.9 × 10^-5 cm² s^-1) exhibits no surface coverage dependence, indicating relatively weak sulfur-sulfur interactions on the Cu(111) substrate.

Original language	English
Pages (from-to)	288-300
Number of pages	13
Journal	Surface Science
Volume	259
Issue number	3
DOIs	https://doi.org/10.1016/0039-6028(91)90559-B
Publication status	Published - 2-Dec-1991

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title = "Sulfur adatom diffusion on the Cu(111) surface",

abstract = "This paper presents the first low-energy, quasi-elastic He-atom scattering study of adsorbate atom diffusion. At 820 K sulfur adatoms segregated onto the close-packed (111) surface of a copper crystal at a rate ∼ 0.01 ML/h. These adatoms produce significant diffuse intensity of scattered He and, as evident from the quasielastic energy broadening, are highly mobile. The diffusion coefficient (D = 2.9 × 10-5 cm2 s-1) exhibits no surface coverage dependence, indicating relatively weak sulfur-sulfur interactions on the Cu(111) substrate.",

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T1 - Sulfur adatom diffusion on the Cu(111) surface

AU - Hinch, B. J.

AU - Frenken, J. W.M.

AU - Zhang, G.

AU - Toennies, J. P.

PY - 1991/12/2

Y1 - 1991/12/2

N2 - This paper presents the first low-energy, quasi-elastic He-atom scattering study of adsorbate atom diffusion. At 820 K sulfur adatoms segregated onto the close-packed (111) surface of a copper crystal at a rate ∼ 0.01 ML/h. These adatoms produce significant diffuse intensity of scattered He and, as evident from the quasielastic energy broadening, are highly mobile. The diffusion coefficient (D = 2.9 × 10-5 cm2 s-1) exhibits no surface coverage dependence, indicating relatively weak sulfur-sulfur interactions on the Cu(111) substrate.

AB - This paper presents the first low-energy, quasi-elastic He-atom scattering study of adsorbate atom diffusion. At 820 K sulfur adatoms segregated onto the close-packed (111) surface of a copper crystal at a rate ∼ 0.01 ML/h. These adatoms produce significant diffuse intensity of scattered He and, as evident from the quasielastic energy broadening, are highly mobile. The diffusion coefficient (D = 2.9 × 10-5 cm2 s-1) exhibits no surface coverage dependence, indicating relatively weak sulfur-sulfur interactions on the Cu(111) substrate.

UR - http://www.scopus.com/inward/record.url?scp=0026414559&partnerID=8YFLogxK

U2 - 10.1016/0039-6028(91)90559-B

DO - 10.1016/0039-6028(91)90559-B

M3 - Article

AN - SCOPUS:0026414559

SN - 0039-6028

VL - 259

SP - 288

EP - 300

JO - Surface Science

JF - Surface Science

IS - 3

ER -

Sulfur adatom diffusion on the Cu(111) surface

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