Determination of the surface-potential barrier of Cu(001) from low-energy-electron-diffraction fine structure
Hitchen, G.J., Thurgate, S.M. and Jennings, P.J. (1991) Determination of the surface-potential barrier of Cu(001) from low-energy-electron-diffraction fine structure. Physical Review B, 44 (8). pp. 3939-3942.
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The surface-potential barrier shape for the (001) face of copper was determined by an analysis of low-energy-electron-diffraction fine-structure measurements. The fitting of the fine-structure spectra was performed with a precise knowledge of the incident diffraction conditions of the experimental data (incidence angle, azimuthal angle, and contact-potential difference). This precision is necessary to allow a consistent barrier shape to be determined. For three different angles of incidence, it was found that a good match between theoretical and experimental I-V spectra was obtained when the image plane was located 2.5 a.u. from the topmost layer of atoms.
|Publication Type:||Journal Article|
|Murdoch Affiliation:||School of Mathematical and Physical Sciences|
|Publisher:||American Physical Society|
|Copyright:||© 1991 The American Physical Society.|
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