Spin polarization in low-energy electron diffraction: Surface analysis of Pt(111)
作者： Roland Feder , Heribert Pleyer , Peter Bauer , Norbert Müller
DOI: 10.1016/0039-6028(81)90497-0
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摘要: Abstract Transverse and longitudinal spin polarization components arising in the diffraction of unpolarized low-energy electrons from Pt(111) have been studied as functions energy geometry. Experimental data measured by means a Mott detector are good agreement with theoretical results obtained relativistic LEED calculations. A detailed investigation selective sensitivity calculated profiles to surface relaxation δ 12 various non-structural model features firstly supports an ion-core potential involving energy-dependent exchange approximation (by discriminating against two band structure potentials), secondly establishes geometry unreconstructed possible slight outward topmost atomic layer (δ = 0.5% ± 1.0% bulk interlayer distance). Debye temperature is found close value 230 K.
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