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稀磁半导体Zn1－xMnxTe的巨法拉第旋转和激子能量
GIANT FARADAY ROTATION AND EXCITON ENERGY IN DILUTED MAGNETIC SEMICONDUCTOR Zn1-xMnxTe
【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．
【Abstract】 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；
【Key words】 diluted magnetic semiconductors； giant Faraday rotatio； exciton erergy.；
【Key words】 diluted magnetic semiconductors； giant Faraday rotatio； exciton erergy.；
【基金】 国家自然科学基金
- 【文献出处】 红外与毫米波学报 ,JOURNAL OF INFRARED AND MILLIMETER WAVES , 编辑部邮箱 ,1995年03期
- 【分类号】TN301.1
- 【被引频次】1
- 【下载频次】62