论文部分内容阅读
在弱磁场条件下研究有限量子阱中磁性极化子特性．能级计算中包括了４ 支界面声子、定域体声子和势垒体声子．同时，考虑了导带非抛物性对能级和回旋质量的影响，给出量子阱 Ｇａ Ａｓ／ Ａｌ０ ．３６ Ｇａ０ ．６４ Ａｓ 中体声子和界面声子对能级和回旋质量贡献的数值结果，并进行讨论．研究发现，在弱磁场条件下狭窄量子阱中势垒体声子和界面声子的贡献比较大，而在宽量子阱中定域体声子的贡献大．磁性极化子回旋质量随磁场 Ｂ 增大而增大，若考虑导带非抛物性修正，所得结果与实验结果基本一致．
Study of Magnetic Polaron Properties in Finite Quantum Wells under Weak Magnetic Field. The energy level calculation includes four interface phonons, localized body phonons and barrier body phonons. At the same time, the influence of the non-parabolicity of the conduction band on the energy levels and the gyration mass is considered, giving the quantum well GaAs / Al0. 36 Ga0. The numerical results of the contribution of phonons and interface phonons to energy levels and gyroscopic masses in 64 As are discussed and discussed. It is found that the contributions of barrier-body phonons and interfacial phonons in narrow quantum wells are relatively large under the weak magnetic field, while the contribution of localized phonon in wide quantum wells is large. The magnetic polarizer gyration mass increases with the increase of the magnetic field B. If we consider the non-parabolic correction of the conduction band, the obtained results are in good agreement with the experimental results.