Initial stages of nickel oxide growth on Ag(001) by pulsed laser deposition

S. H. Phark, Young Jun Chang, T. W. Noh, J. S. Kim

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Submonolayers of nickel oxide films were grown on an Ag(001) by pulsed laser deposition, and characterized in situ by both scanning tunneling microscopy and x-ray photoelectron spectroscopy. We observed quasi-two-dimensional growth of the film, and clearly identified several kinds of defects, such as embedded metallic Ni clusters and, notably, oxygen atoms, even while looking deeply into the substrate. These originated from Ni and O hyperthermal projectiles as well as from NiO clusters that were formed during laser ablation of a NiO target. Those defects played a role of nucleation sites in extending the nucleation stage of thin-film growth.

Original languageEnglish
Article number035426
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number3
StatePublished - 6 Aug 2009


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