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STUDIES OF THE ADSORPTION OF CYANOGEN(C2N2)ONCu(001)USING HELIUM ATOM SCATTERING

Author

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  • I. G. SHUTTLEWORTH

    (Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, USA)

Abstract

The adsorption of cyanogen(C2N2)onCu(001)has been investigated using helium atom scattering. Adsorption at 263 K produces a two domain structure with periodicity c(10 × 6) and symmetry c2 mm. The principle axes of the two domains in the c(10 × 6) pattern lie at right angles to one another. Adsorption at lower temperatures (163 K) produces a disordered structure with no observable diffraction features other than the specular. Annealing the disordered phase to 263 K does not produce an ordered structure. Cooling the ordered structure from 263 K to 163 K produces an enhancement of the diffraction features consistent with the Debye–Waller effect but no disruption of the c(10 × 6) periodicity. Annealing the ordered structure shows that the structure remains stable at temperatures up to 373 K. Analysis of the in-plane diffraction features suggests a reconstruction of theCu(001)substrate consistent with the 2D Frenkel–Kontorova model for overlayer strain relief.

Suggested Citation

  • I. G. Shuttleworth, 2007. "STUDIES OF THE ADSORPTION OF CYANOGEN(C2N2)ONCu(001)USING HELIUM ATOM SCATTERING," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 14(05), pages 863-872.
  • Handle: RePEc:wsi:srlxxx:v:14:y:2007:i:05:n:s0218625x07010330
    DOI: 10.1142/S0218625X07010330
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