The growth of sulfur adlayers on Au(100)

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/108245

Title:	The growth of sulfur adlayers on Au(100)
Authors:	陸大安;Jiang, Yue;Liang, Xihui;Ren, Shendong;Chen, Chi-Lu;Fan, Liang-Jen;Yang, Yaw-Wen;Tang, Jian-Ming;Luh, Dah-An
Contributors:	理學院物理學系
Keywords:	ATOMS;DIMERS;ELECTRON DIFFRACTION;EMISSION SPECTRA;EMISSION SPECTROSCOPY;GOLD;INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;LAYERS;Low energy electron diffraction;PETROLEUM RESIDUES;Photoelectric emission;PHOTOEMISSION;Physics;SCANNING TUNNELING MICROSCOPY;STRUCTURAL MODELS;SULFUR;SURFACES;Trimers;Unit cell;X RADIATION;X ray photoelectron spectroscopy;X ray spectra
Date:	2015-02-14
Issue Date:	2026-04-23 14:40:19 (UTC+8)
Publisher:	American Institute of Physics;United States: AIP Publishing
Abstract:	摘要： We have studied the growth of S layers adsorbed on Au(100) with low-energy electron diffraction (LEED), X-ray photoemission spectra (XPS), and scanning tunneling microscope (STM). Three phases of S/Au(100)—(2 × 2), trimer, and c(2 × 4)—are identified; the latter two are not previously reported. A dose of S2 at 300 K transformed Au(100)-(5 × 20) initially into the (2 × 2) phase and formed the c(2 × 4) phase at a saturation coverage. The STM results show that monolayer Au islands formed during the initial S dose and remained throughout the growth, resulting in a rough c(2 × 4) surface. We show that a highly ordered c(2 × 4) phase can be obtained with a flat (2 × 2) phase as an intermediate step during growth. Based on the evolution of XPS and STM images with varied S2 dose, the components of S 2p are assigned and structural models for the various S/Au(100) phases are proposed. In the (2 × 2) phase, one S atom resides on a four-fold hollow site in each (2 × 2) unit cell, corresponding to a S coverage of 0.25 ML; in the trimer phase, three S atoms form a trimer residing on a four-fold hollow site in each (2 × 2) unit cell, corresponding to a S coverage of 0.75 ML; in the c(2 × 4) phase, there are five S atoms in each primitive unit cell of c(2 × 4); three of them form a trimer residing on a four-fold hollow site, and the other two form a dimer located on the top of the trimer, corresponding to a nominal S coverage of 1.25 ML. With the proposed structural models, the growth of S on Au(100) at 300 K is described in detail. 其他題名： J Chem Phys 出版者： United States: AIP Publishing 出版日期： 2015-02-14 出處： The Journal of Chemical Physics, 2015-02, Vol.142 (6), p.064708 資源來源： AIP Journals (American Institute of Physics) 版權： 2015 AIP Publishing LLC. 識別號： ISSN: 0021-9606 識別號： ISSN: 1089-7690 識別號： EISSN: 1089-7690 識別號： DOI: 10.1063/1.4907789 識別號： PMID: 25681936
Appears in Collections:	[Department of Physics] journal & Dissertation

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