Effect of surface steps on the diffusion of adsorbates investigated with angle-resolved photoelectron spectroscopy

Dah An Luh, Chi Lu Chen, Xihui Liang, Cheng Maw Cheng, Ku Ding Tsuei

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

To investigate the surface diffusion of chemisorbed H on Ag/Au(111) thin films with surface steps, we characterized the distribution of H atoms on the surface by measuring the Shockley states of these surfaces with angle-resolved photoelectron spectroscopy. Our results show that H atoms tend to diffuse and to remain on the terrace at the lower side of the surface steps during annealing. This diffusive behavior is explained qualitatively through the existence of an Ehrlich-Schwoebel potential barrier associated with the surface steps.

Original languageEnglish
Article number045424
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number4
DOIs
StatePublished - 16 Jul 2012

Fingerprint

Dive into the research topics of 'Effect of surface steps on the diffusion of adsorbates investigated with angle-resolved photoelectron spectroscopy'. Together they form a unique fingerprint.

Cite this