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dc.contributor.advisor Walters, G. King
dc.creatorHsu, Hongbing
dc.date.accessioned 2009-06-04T00:08:20Z
dc.date.available 2009-06-04T00:08:20Z
dc.date.issued 1995
dc.identifier.urihttps://hdl.handle.net/1911/16830
dc.description.abstract Spin sensitive electron spectroscopies were used to study low energy electron inelastic scattering from metal surfaces and thin films. In these experiments, a beam of spin polarized electrons from a GaAs source is directed on the sample surface, and the spin polarization and intensity are measured as a function of energy loss and scattering angle by a Mott electron polarimeter coupled with a concentric hemispherical energy analyzer. Systematic studies of the angular dependence of inelastically scattered electrons were conducted on a Cu(100) surface, and Mo/Cu(100), non-magnetized Fe/Cu(100), and Co/Cu(100) films. The polarization and intensity of scattered electrons were measured as function of energy loss and scattering angle. Further studies were also conducted on Ag(100) surface and amorphous Cu/Ag(100) films. From the experimental results, the angular distributions of dipole and impact scattered electrons can be determined individually and both are found to peak in the specular scattering direction. Preliminary studies were conducted on magnetized Co/Cu(100) films. The spin dependent scattering intensity asymmetry was measured, with a clearly observable peak at energy loss of $\sim$1 eV, which coincides with the band splitting. The polarizations of secondary electrons produced by an unpolarized primary beam were also measured. The polarizations can be related to the band polarization of magnetized cobalt films.
dc.format.extent 95 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectCondensed matter physics
dc.title Study of low energy electron inelastic scattering mechanisms using spin sensitive techniques
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Physics
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Doctoral
thesis.degree.name Doctor of Philosophy
dc.identifier.citation Hsu, Hongbing. "Study of low energy electron inelastic scattering mechanisms using spin sensitive techniques." (1995) Diss., Rice University. https://hdl.handle.net/1911/16830.


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