HALL EFFECT IN FERROMAGNETICS
HALL EFFECT IN FERROMAGNETICS
复制标题
DOI：
10.1103/physrev.95.1154
复制
发表时间：
1954-01-01
期刊：
影响因子：
--
通讯作者：
LUTTINGER, JM
中科院分区：
文献类型：
--
作者：
KARPLUS, R;LUTTINGER, JM
铁磁材料中异常霍尔效应的异常大小和强烈的温度依赖性都可以理解为极化传导电子的自旋-轨道相互作用的影响。结果表明，外加电势能的带间矩阵元与自旋轨道微扰相结合，产生垂直于磁场和磁化强度的电流。由于自旋-轨道相互作用的净效应与电子自旋排列的程度成正比，所以这一电流与磁化成正比。霍尔常数的大小等于普通电阻率的平方乘以对温度和杂质含量不太敏感的函数。实验结果也表现出这样的特点。
Both the unusually large magnitude and strong temperature dependence of the extraordinary Hall effect in ferromagnetic materials can be understood as effects of the spin-orbit interaction of polarized conduction electrons. It is shown that the interband matrix elements of the applied electric potential energy combine with the spin-orbit perturbation to give a current perpendicular to both the field and the magnetization. Since the net effect of the spin-orbit interaction is proportional to the extent to which the electron spins are aligned, this current is proportional to the magnetization. The magnitude of the Hall constant is equal to the square of the ordinary resistivity multiplied by functions that are not very sensitive to temperature and impurity content. The experimental results behave in such a way also.