Spin-polarized low-energy electron diffraction: Theory, experiment and analysis of results from W(001)(1×1)
作者： R. Feder , J. Kirschner
DOI: 10.1016/0039-6028(81)90100-X
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摘要: Abstract The theory of spin-polarized low-energy electron diffraction (SPLEED) is outlined with an emphasis on symmetry-induced properties and models for the effective single-sphere potential. Details are given experimental set-up involving a new type spin polarization detector based SPLEED. Numerical calculations W(001)(1× 1) surface proceeded in close coordination measurements (normal to scattering plane) intensity. A variety calculated intensity profiles exhibits features, which very sensitive changes top interlayer spacing, as well features various ingredients potential model. overall agreement between experiment good not only intensities, but also polarization. It implies contraction topmost spacing W(001) respect bulk by 7% ± 1.5%, supports use energy-dependent exchange part nonuniform absorption ion-core
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