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半导体量子阱中强耦合磁极化子的性质

简荣华 , 赵翠兰

量子电子学报 doi:10.3969/j.issn.1007-5461.2010.04.017

采用线性组合算符和幺正变换方法,研究了半导体量子阱中强耦合磁极化子的性质.推导出了无限深量子阱中强耦合磁极化子的振动频率、基态能量和自陷能随回旋共振频率及阱宽的变化关系.以RbCl量子阱进行数值计算,结果表明:当阱宽一定时,强耦合磁极化子振动频率、基态能量和自陷能随回旋共振频率的增大而增大;当回旋共振频率确定时,磁极化子振动频率和自陷能随阱宽的增加而增大,最后趋向于三维结果,而磁极化子的基态能量则随阱宽的增加而减小,且在阱宽取相对较小值时,表现出奇特的量子尺寸效应.

关键词: 光电子学 , 量子效应 , 线性组合算符 , 磁极化子 , 量子阱

Cyclotron Resonance of Free Magnetopolaron in Quantum Well Wires

Haiyang ZHOU Kadi ZHU Shiwei GU Dept.of Applied Physics , Jiaotong University , Shanghai , 200030 , China

材料科学技术（英文）

The cyclotron resonance of magnetopolaron in quantum well wires (QWWs) have been studied with the use of variational solutions to the effective mass equation. The results show that both the abso- lute value of the electron-phonon interaction energy and the cyclotron resonance frequency de- crease with the increase of the sizes of QWWs, and also that the cyclotron resonance frequency in- creases with the external magnetic field.

关键词: cyclotron resonance , null , null

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