稀磁半导体Zn_（1－x）Mn_xTe的巨法拉第旋转和激子能量  

GIANT FARADAY ROTATION AND EXCITON ENERGY IN DILUTED MAGNETIC SEMICONDUCTOR Zn_(1-x)Mn_xTe

作　　者：王学忠[1] 王荣明[1] 刘继周[1] 陈辰嘉[1] 

机构地区：[1]北京大学物理系

出　　处：《红外与毫米波学报》1995年第3期211-215,共5页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金

摘　　要：在９０～３００Ｋ温度范围测量和研究了组分为０．２≤ｘ≤０．６的稀磁半导体Ｚｎ１－ｘＭｎｘＴｅ的法拉第旋转随入射光子能量和组分的变化．利用单振子模型获得了激子能量与组分的关系．还研究了法拉第旋转随温度的变化，得到激子能量的温度系数为－７．３×１０－６ｅＶ／Ｋ（ｘ＝０．３），首次从法拉第旋转测量获得了该晶体的居里温度．Faraday rotation as a function of photon energy and composition was measured and studied for Zn1-xMnxTe with 0≤x≤0. 6 at a temperature range from 90K to 300K.Exciton energy as a function of composition was obtained by using a single -oscillator model. Faraday rotation as a function of temperature was investigated. The temperature coefficient of the exciton energy was found to be - 7. 3× 10-4eV/K for x= 0. 3. The Curie temperature was obtained from Faraday rotation measurement for the first time.

关 键 词：稀磁半导体 巨法拉第旋转 激子能量 

分 类 号：O471.3[理学—半导体物理]