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Role Of The He Atom Surface Potential On The Cu(001) Phonon Determination

Author

Listed:
  • A. FRANCHINI

    (Dipartimento di Fisica, Universitá di Modena, Via Campi 213/A, 41100 Modena, Italy)

  • G. SANTORO

    (Dipartimento di Fisica, Universitá di Modena, Via Campi 213/A, 41100 Modena, Italy)

  • V. BORTOLANI

    (Dipartimento di Fisica, Universitá di Modena, Via Campi 213/A, 41100 Modena, Italy)

  • A. BELLMAN

    (Laboratorio TASC, Padriciano 99, 34012 Trieste, Italy)

  • D. CVETKO

    (Laboratorio TASC, Padriciano 99, 34012 Trieste, Italy)

  • L. FLOREANO

    (Laboratorio TASC, Padriciano 99, 34012 Trieste, Italy)

  • A. MORGANTE

    (Laboratorio TASC, Padriciano 99, 34012 Trieste, Italy)

  • M. PELOI

    (Laboratorio TASC, Padriciano 99, 34012 Trieste, Italy)

  • F. TOMMASINI

    (Laboratorio TASC, Padriciano 99, 34012 Trieste, Italy)

  • T. ZAMBELLI

    (Laboratorio TASC, Padriciano 99, 34012 Trieste, Italy)

Abstract

We present new measurements of He atom inelastic scattering from the (001) surface of Copper. Our results confirmed the recent data obtained in Gottingen and show that at large momentum transfer in the$\bar \Gamma \bar M$direction the intensity of the longitudinal resonance is larger than that of the Rayleigh wave. We interpret these results by evaluating the reflection coefficient in the Distorted Wave Born Approximation. By taking the He surface interaction potential as a sum of nonspherical pairwise potential we are able to explain quantitatively the behavior of the experimental spectra.

Suggested Citation

  • A. Franchini & G. Santoro & V. Bortolani & A. Bellman & D. Cvetko & L. Floreano & A. Morgante & M. Peloi & F. Tommasini & T. Zambelli, 1994. "Role Of The He Atom Surface Potential On The Cu(001) Phonon Determination," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 1(01), pages 67-74.
    • Handle: RePEc:wsi:srlxxx:v:01:y:1994:i:01:n:s0218625x94000096
    DOI: 10.1142/S0218625X94000096
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    Cited by:

    1. Jansen, L. & Block, R., 1997. "Effect of pressure and of doping on superconductivity in the double-mercury-layer cuprate Hg2 (N = 2). A quantitative analysis based on indirect-exchange pairing," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 247(1), pages 265-280.

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