This thesis reports an analytic study on the giant- magnetoresistance of multi-layer sandwich structure and spin-valve structure by using Green function quantum statistics approach and nonlinear Kubo formula that was derived by sub-dynamics theory.

• 本论文报导使用量子统计格林函数方法以及由子动力学理论推出的非线性响应理论对多层膜三明治结构和自旋阀结构的巨磁电阻效应的解析研究。