稀土石榴石的磁光效应与L-S耦合的影响及温度的依赖性

THE EFFECT OF THE SPIN ORBIT COUPLING AND TEMPERATURE DEPENDENCE ON THE MAGNETO OPTIC EFFECT IN RARE EARTH SUBSTITUTED YTTRIUM IRON GARNET

用量子理论计算了Ｃｅ－ＹＩＧ中的Ｌ－Ｓ耦合作用对Ｆａｒａｄａｙ旋转角的影响．我们发现，基组态与激发组态的Ｌ－Ｓ耦合作用对θＦ的影响是不同的，基组态的Ｌ－Ｓ耦合作用大，不可忽略，而激发组态的Ｌ－Ｓ耦合作用很小，可以忽略．本文并定量地计算了Ｆａｒａｄａｙ旋转随温度变化的关系．

The action of L S coupling in Ce YIG is presented based on quantum theory.We found that the coupling of ground and excited configurations are different.The ground configurations of L S coupling is larger,and not negligible.The dependance of Faraday rotation on temperature in Ce substituted yttrium iron garnet is calculated based on the quantum theory.