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dc.contributor.advisor Walters, G. King
dc.creatorMulhollan, Gregory Anthony
dc.date.accessioned 2009-06-04T00:05:50Z
dc.date.available 2009-06-04T00:05:50Z
dc.date.issued 1990
dc.identifier.citation Mulhollan, Gregory Anthony. "Surface studies using spin-polarized electron energy loss spectroscopy." (1990) Diss., Rice University. https://hdl.handle.net/1911/16376.
dc.identifier.urihttps://hdl.handle.net/1911/16376
dc.description.abstract Spin-polarized electron energy loss spectroscopy (SPEELS) has been used to investigate several paramagnetic surfaces. In this technique, a low energy beam of spin-polarized electrons from a GaAs source is directed at the surface to be studied and the spin-polarization of the emitted electrons, as well as the kinetic energy distribution, is measured via a micro-Mott polarimeter equipped with a retarding potential energy analyzer. The near-elastic-energy electrons contain information on the inelastic scattering channels available in the solid. The spin-polarization of these same electrons is sensitive to the shape of the final state manifold, i.e., the density of unoccupied states. The low energy and behavior of the spin-polarization spectrum mainly reflects the high number of unpolarized electrons present near zero kinetic energy. Results from Cu(100), polycrystalline Au, GaAs(110), GaAs(100) and Mo(110) surfaces suggest that exchange scattering with spin-flip is ubiquitous for the lowest energy electron beam energies studied ($\sim$14 eV). A simple convolution of the empty and occupied densities of states correctly predicts the shape of the energy dependent spin-flip rate.
dc.format.extent 104 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectCondensed matter physics
dc.title Surface studies using spin-polarized electron energy loss spectroscopy
dc.type Thesis
dc.identifier.digital MulhollanG
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


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