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dc.contributor.advisor Walters, G. King
dc.creatorZhang, Xia
dc.date.accessioned 2009-06-04T00:02:40Z
dc.date.available 2009-06-04T00:02:40Z
dc.date.issued 1991
dc.identifier.urihttps://hdl.handle.net/1911/16502
dc.description.abstract Spin-sensitive electron spectroscopies were used to study paramagnetic metal surfaces and thin films. In these experiments, a beam of low-energy spin-polarized electrons from a GaAs source is directed at the target surface, and the spin polarizations and the energy distributions of scattered electrons are measured by a compact Mott polarimeter equipped with either a retarding field analyzer or a concentric hemispherical analyzer. Secondary electrons ejected from a Cu(100) surface by a polarized incident beam of energies 14, 50 and 100 eV were investigated by spin-polarized secondary electron spectroscopy. The data are interpreted in terms of the fractional contributions of rediffused primary and true secondary electrons to the total secondary electron yield. Spin-polarized electron-energy-loss spectra were obtained from Cu(100) and Mo(110). The data reveal strong evidence for inelastic spin-flip exchange scattering due to electron-hole pair excitation. In particular, a prominent polarization-loss feature evident in the Mo(110) data correlates with the joint density of occupied and unoccupied states. The dramatically different behavior in the polarization of scattered electrons from molybdenum and copper was employed as a signature to determine the attenuation length for low energy electrons in molybdenum. When molybdenum thin films were grown on a Cu(100) substrate, the Mo loss feature becomes prominent upon deposition of only one monolayer.
dc.format.extent 144 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectCondensed matter physics
dc.title Studies of paramagnetic metal surfaces and thin films using spin-sensitive electron spectroscopies
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 Zhang, Xia. "Studies of paramagnetic metal surfaces and thin films using spin-sensitive electron spectroscopies." (1991) Diss., Rice University. https://hdl.handle.net/1911/16502.


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