东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

抛物量子线中束缚磁极化子的性质

期刊名称：发光学报，2006，27（3）：296-302.
时间：0
分类：O472.3[理学—半导体物理;理学—物理] O469[理学—凝聚态物理;理学—电子物理学;理学—物理]
作者机构：[1]内蒙古民族大学物理与机电学院,内蒙古通辽028043
相关基金：国家自然科学基金资助项目（10347004）
相关项目：固态量子信息中的声子效应

关键词：抛物量子线, 束缚磁极化子, 线性组合算符, parabolic quantum wires , bound magnetopolaron , linear combination operator

中文摘要：

研究抛物量子线中束缚磁极化子的性质，采用线性组合算符和幺正变换方法导出了强、弱耦合两种情况下的基态能量、振动频率和光学声子平均数。结果表明，无论是强耦合还是弱耦合情况，抛物量子线中束缚磁极化子的振动频率λ、基态能量E0和光学声子平均数N都随约束强度w0的增大而迅速增大。

英文摘要：

With the development of several experimental techniques, for instance, metalorganic chemical vapour deposition, molecular beam epitaxy and electron beam lithography combined with reverse mesa etching, there has been of considerable interest in understanding of hydrogenic-impurity states in low-dimensional semiconductor heterostructures such as quantum wells, quantum wires and quantum dots. In recent years, there has been great interest in investigating the problem of a bound magnetopolaron in a parabolic quantum wires both theoretically and experimentally. And a lot of work has also been devoted to study the properties of the bound magnetopolaron in a parabolic quantum wires by kinds of methods. However, by using a linear combination operator and unitary transformation method to study it is seldom. The properties of the bound magnetopolaron in a parabolic quantum wires were studied by using a linear combination operator and unitary transformation method. The ground state energy, the vibration frequency and the mean number of optical phonons of both weak-coupling and strong-coupling bound magnetopolaron in a parabolic quantum wires calculated respectively. The influence of the electron-phonon coupling strength, the cyclotron frequency and the confinemend length of the quantum wires on the ground state energy, the vibration frequency and the mean number of optical phonons of the bound magnetopolaron in a parabolic quantum wires were discussed. More obviously the variational relation of the ground state energy, the vibration frequency and the mean number of optical phonons with the electron-phonon coupling strength, the cyclotron frequency and the confinemend length of the quantum wires were studied. Numerical calculations were performed for GaAs quantum wire, as an example, and the results illustrated that the ground state energy, the vibration frequency and the mean number of optical phonons in a parabolic quantum wires will increase with increasing the confinemend length of the quantum wires and the magnetic fi

同期刊论文项目