Adsorption of PF3 on Cu(001): Ordered overlayer structures and frustrated translational modes

J. Braun, G. G. Bishop, A. V. Ermakov, L. V. Goncharova, Barbara Hinch

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The adsorption of PF3 on Cu(001) was studied by means of high resolution helium atom scattering (HAS) and SPALEED. PF3 adsorbs at surface temperatures below 210 K and forms a lattice gas at exposures less than 0.8 L. Saturation is reached for exposures greater than 3 L. At these coverages PF3 forms an ordered c(4 x 2) layer for surface temperatures above 145 K. For temperatures below 145 K an incommensurate, hexagonal PF3 layer was observed that necessarily excludes uniquely on-top site PF3 molecule to surface coordination. A new vibrational mode in the thermal energy regime corresponding to the frustrated translation parallel to the surface was identified; the energies of excitation were 3.3 meV and 3.5 meV, respectively, for the isolated molecules and the c(4 x 2) structure. No dispersion of the frustrated translation in the ordered c(4 x 2) phase was found. The results are discussed in terms of adsorbate-adsorbate and adsorbate-substrate interactions.

Original languageEnglish (US)
Pages (from-to)5337-5345
Number of pages9
JournalJournal of Chemical Physics
Volume110
Issue number11
DOIs
StatePublished - Mar 15 1999

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surface temperature
Adsorbates
Adsorption
adsorption
helium atoms
thermal energy
molecules
vibration mode
saturation
Helium
Molecules
high resolution
Thermal energy
scattering
gases
Temperature
excitation
Gases
interactions
Scattering

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Braun, J. ; Bishop, G. G. ; Ermakov, A. V. ; Goncharova, L. V. ; Hinch, Barbara. / Adsorption of PF3 on Cu(001) : Ordered overlayer structures and frustrated translational modes. In: Journal of Chemical Physics. 1999 ; Vol. 110, No. 11. pp. 5337-5345.
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Adsorption of PF3 on Cu(001) : Ordered overlayer structures and frustrated translational modes. / Braun, J.; Bishop, G. G.; Ermakov, A. V.; Goncharova, L. V.; Hinch, Barbara.

In: Journal of Chemical Physics, Vol. 110, No. 11, 15.03.1999, p. 5337-5345.

Research output: Contribution to journalArticle

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T1 - Adsorption of PF3 on Cu(001)

T2 - Ordered overlayer structures and frustrated translational modes

AU - Braun, J.

AU - Bishop, G. G.

AU - Ermakov, A. V.

AU - Goncharova, L. V.

AU - Hinch, Barbara

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