Multiple-scattering of near-edge x-ray absorption fine structure of Sulphur-passivated InP(100) surface

Song Cao, Jing Chang Tang, Shao Lai Shen, Geng Sheng Chen, Dan Ma

Research output: Contribution to journalArticlepeer-review

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Abstract

We use the multiple-scattering duster method to calculate the sulphur 1s near-edge x-ray absorption one structure (NEXAFS) of S-passivated InP(100) surface. The physical origins of the resonances in the NEXAFS have been unveiled. It is shown that the most important resonance is attributed to the photoelectron scattering between the central sulphur and the nearest indium atoms. The studies show that two S-S dimers with the bond lengths of 2.05 Å and 3.05 Å coexist in the surface, meanwhile the bridge and antibridge site adsorption of single S could not be ruled out. We support the scanning tunnelling microscopy result that the S-passivated InP(100) surface exhibits significant disorder.

Original languageEnglish
Pages (from-to)1151-1154
Number of pages4
JournalChinese Physics Letters
Volume20
Issue number7
DOIs
StatePublished - Jul 2003

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