Publication detail

Slowing down adatom diffusion by an adsorbate: Co on Pt(111) with and without preadsorbed CO

KALOUSEK, R. SCHMID, M. HAMMERSCHMID, A. LUNDGREN, E. VARGA, P.

Czech title

Zpomalení difúze atomů pomocí adsorbátu: Co na Pt(111) s a bez preadsorbovaného CO

English title

Slowing down adatom diffusion by an adsorbate: Co on Pt(111) with and without preadsorbed CO

Type

journal article - other

Language

en

Original abstract

Submonolayer deposition of cobalt on Pt(111) was studied by scanning tunneling microscopy at room temperature. It was found that deposition on a surface with adsorbed carbon monoxide (saturation coverage) leads to an island density almost ten times as high as that resulting from deposition on the clean platinum surface. Based on nucleation theory, we explain this fact as the result of a reduction of the diffusion coefficient of the Co adatoms in the presence of CO by more than two orders of magnitude. This effect is attributed to the displacement and/or rearrangement of the CO molecules necessary when Co adatoms diffuse over the "crowded" surface.

Czech abstract

Podmonovrstevní pokrytí PT(111) kobaltem bylo studováno pomocí STM za pokojové teploty.

English abstract

Submonolayer deposition of cobalt on Pt(111) was studied by scanning tunneling microscopy at room temperature. It was found that deposition on a surface with adsorbed carbon monoxide (saturation coverage) leads to an island density almost ten times as high as that resulting from deposition on the clean platinum surface. Based on nucleation theory, we explain this fact as the result of a reduction of the diffusion coefficient of the Co adatoms in the presence of CO by more than two orders of magnitude. This effect is attributed to the displacement and/or rearrangement of the CO molecules necessary when Co adatoms diffuse over the "crowded" surface.

Keywords in English

EPITAXIAL-GROWTH, ISLAND GROWTH, FILMS, NUCLEATION, ADSORPTION, METAL

RIV year

2003

Released

01.01.2003

ISSN

1098-0121

Journal

PHYSICAL REVIEW B

Volume

68

Number

23

Pages count

7

BIBTEX


@article{BUT41939,
  author="Radek {Kalousek} and Michael {Schmid} and A. {Hammerschmid} and E. {Lundgren} and P. {Varga},
  title="Slowing down adatom diffusion by an adsorbate: Co on Pt(111) with and without preadsorbed CO",
  journal="PHYSICAL REVIEW B",
  year="2003",
  volume="68",
  number="23",
  month="January",
  issn="1098-0121"
}