CAJ | 학술논문

用椭圆偏振光谱仪和磁光谱仪研究了热蒸发和溅射法制备的Ag膜的光学和磁光性质.在1.0T的外磁场作用下，贵金属Ag在3.9eV附近具有可观的磁光效应.分析发现主要来源于两个方面：1)自由电子在外磁场中回旋共振引起小的非对角元；2)Ag本身在3.9eV附近的光学性质.数值计算表明磁光克尔效应θK和εK的峰值随ωc的增加而增大.对磁光实验数据拟合的有效质量与光学的相应数值基本相符，这为自由电子有效质量的测量提供了一种新方法.
용타원편진광보의화자광보의연구료열증발화천사법제비적Ag막적광학화자광성질.재1.0T적외자장작용하，귀금속Ag재3.9eV부근구유가관적자광효응.분석발현주요래원우량개방면：1)자유전자재외자장중회선공진인기소적비대각원；2)Ag본신재3.9eV부근적광학성질.수치계산표명자광극이효응θK화εK적봉치수ωc적증가이증대.대자광실험수거의합적유효질량여광학적상응수치기본상부，저위자유전자유효질량적측량제공료일충신방법.
The magneto-optic and optical properties of evaporated and sputtered Ag were studied experimentally and theoretically.An apparent Kerr effect near 3.9eV was observed at room temperature.It was found to originate from the small off-diagonal term of dielectric function tensor,induced by the free electron movement under an applied magnetic field.The special optical properties near 3.9eV due to the strong plasma absorption affect the line shape of the spectrum.The simulations,based on the classic Drude model,show the effective electron mass m=0.8m0.This provides a new method to experimentally determine the effective electron mass and other parameters.