| Summary: | 碩士 === 國立清華大學 === 物理學系 === 91 === We investigate the induced magnetization of the spacer layer in
the magnetic quantum well of the GMR structure. Only parallel
arrangements of the magnetization are considered. By assuming a
non-vanishing exchange coupling constant in the spacer layer, we derive a self-consistent equation for the average induced
magnetization. Based on the self-consistent equation, the induced magnetization is computed numerically, which then determines the coupling energies. The magnetization is found to oscillate with the width of the spacer layer. Furthermore, it shows distinct jumps with characteristic periods. At large d, the magnetization decays to zero rapidly, allowing one to define an effective decay length. Systematic studies of the dependence of decay length on the relevant parameters are performed.
|
|---|
