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dc.contributor.authorRohanizadegan, Yousef
dc.date.accessioned2013-01-24T13:31:41Z
dc.date.available2013-01-24T13:31:41Z
dc.date.issued2013-01-24
dc.identifier.urihttp://hdl.handle.net/10464/4185
dc.description.abstractA generalization to the BTK theory is developed based on the fact that the quasiparticle lifetime is finite as a result of the damping caused by the interactions. For this purpose, appropriate self-energy expressions and wave functions are inserted into the strong coupling version of the Bogoliubov equations and subsequently, the coherence factors are computed. By applying the suitable boundary conditions to the case of a normal-superconducting interface, the probability current densities for the Andreev reflection, the normal reflection, the transmission without branch crossing and the transmission with branch crossing are determined. Accordingly the electric current and the differential conductance curves are calculated numerically for Nb, Pb, and Pb0.9Bi0.1 alloy. The generalization of the BTK theory by including the phenomenological damping parameter is critically examined. The observed differences between our approach and the phenomenological approach are investigated by the numerical analysis.en_US
dc.language.isoengen_US
dc.publisherBrock Universityen_US
dc.subjectBTK Generalization Lifetime Quasiparticle Finiteen_US
dc.titleGeneralization of the BTK Theory to the Case of Finite Quasiparticle Lifetimesen_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
dc.embargo.termsNoneen_US
refterms.dateFOA2021-08-08T02:02:46Z


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