A scanning tunneling microscopy study of the adsorption of Xe on Pt(111) up to one monolayer

Sebastian Horch, P. Zeppenfeld, G. Comsa

Research output: Contribution to journalJournal articleResearchpeer-review

65 Downloads (Pure)

Abstract

The adsorption of Xe on Pt(111) has been investigated from the arrival of the very first atoms up to completion of the monolayer using a variable-temperature Scanning Tunneling Microscope (STM). Surprisingly, in the initial stages of the adsorption Xe preferentially binds to a low coordination site, the upper edge of the platinum steps. The strong binding to these sites leads to a local repulsive interaction with further Xe atoms. Therefore, the Xe atoms located at the upper edge of the steps do not serve as nuclei for 2D Xe islands, which, instead, form on the terraces and at the lower edges of the platinum steps. Only during completion of the monolayer do these islands make contact with the atoms adsorbed at the beginning in the upper-edge positions. The full monolayer exhibits the Hexagonal Incommensurate Rotated (HIR) phase already known from earlier helium-diffraction experiments.
Original languageEnglish
JournalApplied Physics A: Materials Science & Processing
Volume60
Issue number2
Pages (from-to)147-153
ISSN0947-8396
DOIs
Publication statusPublished - 1995
Externally publishedYes

Fingerprint Dive into the research topics of 'A scanning tunneling microscopy study of the adsorption of Xe on Pt(111) up to one monolayer'. Together they form a unique fingerprint.

Cite this