Dissertation/Thesis Abstract

Numerical modeling of the singlet proximity effect in a superconductor-ferromagnet trilayer
by Richie-Halford, Adam C., M.S., California State University, Long Beach, 2010, 97; 1490332
Abstract (Summary)

We investigate superconductor-insulator-ferromagnet-superconductor Josephson junctions using the quasiclassical Green's functional theory in the “dirty limit,” where the elastic scattering length ℓ is much shorter than the characteristic decay length in the ferromagnet. We manipulate the governing Usadel equations for entry into numerical analysis and develop a numerical model to explore the behavior of the superconducting Green's functions in the trilayer, avoiding the linearizing approximation usually found in the literature. We then review the results of the numerical calculation for the behavior of the Green's function under the variation of the ferromagnet thickness df, the ferromagnet's internal magnetization strength h, the strength of the proximity effect γ, and the interface transparency γBi. These results are compared to analytical, numerical, and experimental results in the existing literature. We close with suggestions for future research.

Indexing (document details)
Advisor: Bill, Andreas
School: California State University, Long Beach
School Location: United States -- California
Source: MAI 49/04M, Masters Abstracts International
Subjects: Condensed matter physics
Publication Number: 1490332
ISBN: 978-1-124-54779-4
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