摘要
利用子动力学理论将计算电导率的Kubo公式被推广成为一个包含高阶项的公式,并利用此公式,计算巨磁阻,显示了高阶影响的重要性.
The Kubo formula for the conductivity of a mesoscopic system has been extended to a generalized form that includes higher-order corrections using a new formalism based on a subdynamics approach which may be a suitable formula to calculate the current-voltage relations of mesoscopic systems. For demonstrating application of the formula, using this formula, GMR has been calculated, which shows that the higher order correction is important.
出处
《太原师范学院学报（自然科学版）》
2006年第1期67-69,95,共4页
Journal of Taiyuan Normal University:Natural Science Edition
基金
China State Key Projects of Basic Research(G1999064509)and NFS of the Education Commission of Jiangsu Province of China(00KJB140010).
关键词
Kubo公式
巨磁阻
子动力学
Kubo formula
GMR （Giant Magnetoresistance）
subdynamics
