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dc.contributor.authorLongo, Janice P.en_US
dc.date.accessioned2009-07-09T18:49:39Z
dc.date.available2009-07-09T18:49:39Z
dc.date.issued1988-07-09T18:49:39Z
dc.identifier.urihttp://hdl.handle.net/10464/2146
dc.description.abstractThe frequency dependence of the electron-spin fluctuation spectrum, P(Q), is calculated in the finite bandwidth model. We find that for Pd, which has a nearly full d-band, the magnitude, the range, and the peak frequency of P(Q) are greatly reduced from those in the standard spin fluctuation theory. The electron self-energy due to spin fluctuations is calculated within the finite bandwidth model. Vertex corrections are examined, and we find that Migdal's theorem is valid for spin fluctuations in the nearly full band. The conductance of a normal metal-insulator-normal metal tunnel junction is examined when spin fluctuations are present in one electrode. We find that for the nearly full band, the momentum independent self-energy due to spin fluctuations enters the expression for the tunneling conductance with approximately the same weight as the self-energy due to phonons. The effect of spin fluctuations on the tunneling conductance is slight within the finite bandwidth model for Pd. The effect of spin fluctuations on the tunneling conductance of a metal with a less full d-band than Pd may be more pronounced. However, in this case the tunneling conductance is not simply proportional to the self-energy.en_US
dc.language.isoengen_US
dc.publisherBrock Universityen_US
dc.subjectFluctuations (Physics)en_US
dc.subjectElectron paramagnetic resonance.en_US
dc.subjectPalladium.en_US
dc.subjectSpin (Aerodynamics)en_US
dc.titleThe finite bandwidth model for spin fluctuations in Pden_US
dc.typeElectronic Thesis or Dissertationen_US
dc.degree.nameM.Sc. Physicsen_US
dc.degree.levelMastersen_US
dc.contributor.departmentDepartment of Physicsen_US
dc.degree.disciplineFaculty of Mathematics and Scienceen_US
refterms.dateFOA2021-08-07T02:22:53Z


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